Ingredient Shell (壳 ké / 甲 jiǎ)

Shi Jue Ming

Abalone shell · 石决明

Haliotis diversicolor Reeve · Haliotidis Concha

Also known as: Jiu Kong Luo (九孔螺), Bao Yu Ke (鲍鱼壳)

Shi Jue Ming (Abalone shell) plant

Images shown are for educational purposes only

Abalone shell is a cold, mineral-like substance used in Chinese medicine primarily for conditions involving the head and eyes. It is best known for calming excessive upward activity in the body that causes headaches, dizziness, and high blood pressure, and it is one of TCM's most important herbs for eye health, used for red or painful eyes, blurred vision, and night blindness.

Category Liver-calming and Wind-extinguishing herbs (平肝息风药) Liver Yang-subduing herbs (平抑肝阳药)
Therapeutic focus Eye Health and Vision Blood Pressure Support Headache and Dizziness Relief Stress and Anxiety

TCM Properties

Temperature

Cold

Taste

Salty (咸 xián)

Channels entered

Liver

Parts used

Shell (壳 ké / 甲 jiǎ)

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Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Ingredient Does

Every ingredient has a specific set of actions — here's what Shi Jue Ming does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Shi Jue Ming is primarily used to support these areas of health:

Eye Health and Vision Blood Pressure Support Headache and Dizziness Relief Stress and Anxiety

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Shi Jue Ming performs to restore balance in the body:

Calms the Liver and Subdues Yang Clears Liver Heat Brightens the Eyes

How these actions work

'Calms the Liver and subdues Yang' (平肝潜阳 píng gān qián yáng) means this herb anchors and pulls down overactive Liver Yang that has risen to the head. In TCM, when the Liver's Yang aspect becomes excessive (often due to underlying Yin deficiency), it flares upward causing headaches, dizziness, irritability, and a feeling of pressure in the head. Shi Jue Ming's salty taste and heavy, shell-like quality give it a natural downward-pulling action that counteracts this rising tendency. The classical text Yi Xue Zhong Zhong Can Xi Lu calls it "an essential herb for cooling and settling the Liver" (凉肝镇肝之要药). It is especially well suited to cases where both Yin deficiency and Yang excess are present, because its cold nature simultaneously cools the Heat that accompanies Yang rising.

'Clears Liver Heat' (清肝热 qīng gān rè) refers to this herb's ability to drain excess Heat from the Liver channel. When the Liver carries too much Heat, it can manifest as red, painful, swollen eyes, a flushed face, or a bitter taste in the mouth. The cold, salty nature of Shi Jue Ming enters the Liver's blood level and clears this Heat, which is why classical sources say "its salty, cold nature enters the blood and removes Heat, thus treating all manner of eye diseases."

'Brightens the eyes' (明目 míng mù) means this herb directly addresses a wide range of eye conditions. Since the Liver "opens to the eyes" in TCM theory, treating the Liver often improves vision. Shi Jue Ming is considered one of the most important herbs for eye health. It treats both excess-type eye problems (red, swollen, painful eyes from Liver Fire) and deficiency-type eye problems (blurred vision, night blindness, dry eyes from Liver and Kidney Yin deficiency) when combined with appropriate partner herbs. The calcined form is especially used for external eye conditions and corneal opacities.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Shi Jue Ming is used to help correct these specific patterns.

Why Shi Jue Ming addresses this pattern

Shi Jue Ming is one of the primary herbs for Liver Yang Rising. Its salty taste and heavy, shell-derived quality give it a strong downward-pulling and anchoring action that directly counteracts the upward surge of Yang. Its cold thermal nature simultaneously clears the Heat that often accompanies Liver Yang excess. When Liver and Kidney Yin are depleted, they can no longer restrain Liver Yang, which flares upward and disturbs the head. Shi Jue Ming subdues this rising Yang while its cold nature partially nourishes the Yin aspect by clearing Heat. Classical sources describe it as "an essential herb for cooling and settling the Liver," making it applicable to both excess and deficiency presentations of this pattern.

A practitioner would look for one or more of these signs

Dizziness

Dizziness and vertigo from Yang rising to the head

Headaches

Headache with a sensation of distension, especially at the temples or vertex

Tinnitus

Ringing in the ears

Irritability

Irritability and easy anger

Commonly Used For

These are conditions where Shi Jue Ming is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Liver Yang Rising

TCM Interpretation

TCM understands hypertension primarily through the lens of Liver Yang rising upward and disturbing the head. This often develops from a foundation of Liver and Kidney Yin deficiency: when the cooling, anchoring Yin substance is depleted (through aging, chronic stress, overwork, or emotional strain), the Liver's Yang can no longer be restrained and surges upward. This manifests as headache, dizziness, flushed face, irritability, and elevated blood pressure. Some cases also involve Liver Fire or Phlegm obstruction complicating the picture.

Why Shi Jue Ming Helps

Shi Jue Ming directly addresses the core mechanism of Liver-Yang-type hypertension. Its salty taste and heavy shell quality create a strong downward-pulling, anchoring effect that counteracts the upward surge of Yang. Its cold thermal nature cools the accompanying Heat. Modern pharmacological research has confirmed blood pressure-lowering effects. It is commonly used at higher doses (15-30g) and is a key ingredient in Tiān Má Gōu Téng Yǐn, the most widely used formula for Liver Yang rising hypertension. It pairs well with Mǔ Lì (oyster shell) for stronger anchoring, or with Xià Kū Cǎo for stronger Heat-clearing.

Also commonly used for

Glaucoma

Used adjunctively to lower intraocular pressure

Cataract

Early-stage, from Liver and Kidney Yin deficiency

Corneal Opacity

Calcined form used topically or internally for visual obstructions

Night Blindness

Often combined with Cāng Zhú and pig liver

Migraine

Liver Yang-type headaches

Acid Reflux

Calcined form used for excess stomach acid

Ingredient Properties

Every ingredient has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Cold

Taste

Salty (咸 xián)

Channels Entered

Liver

Parts Used

Shell (壳 ké / 甲 jiǎ)

Dosage & Preparation

These are general dosage guidelines for Shi Jue Ming — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

6-20g

Maximum dosage

Up to 30g in decoction for acute Liver Yang rising with severe headache or hypertension, under practitioner supervision. Must always be decocted first for at least 20-30 minutes.

Dosage notes

Use the lower range (6-15g) for milder eye conditions or as a supporting herb in formulas. Use the higher range (15-30g) for pronounced Liver Yang rising with severe headache, dizziness, or hypertension. Raw (unprocessed) Shi Jue Ming has stronger cooling and Liver-calming properties and is preferred for Liver Fire and Liver Yang conditions. Calcined Shi Jue Ming (煅石决明) has reduced cold properties and enhanced astringent and acid-neutralizing effects, making it more suitable for topical eye applications (ground and water-floated) and for stomach acid excess. Salt-processed Shi Jue Ming (盐石决明) enhances its Yin-nourishing capacity and strengthens its Liver and Kidney supplementing effects.

Preparation

Must be crushed into pieces (打碎) and decocted first (先煎) for 20-30 minutes before adding other herbs, as its hard mineral shell requires prolonged boiling to release its active components. For external eye use, the shell should be calcined (煅), then finely ground and water-floated (水飞) to produce an extremely fine, non-irritating powder.

Processing Methods

In TCM, the same ingredient can be prepared in different ways to change its effects — here's how processing alters what Shi Jue Ming does

Processing method

The cleaned abalone shell is placed in a suitable container and calcined over strong, smokeless flame until brittle, then removed, cooled, and crushed.

How it changes properties

Calcination reduces the salty taste and cold nature somewhat. The raw shell's strong Liver-subduing and Yang-anchoring action is diminished, but its ability to brighten the eyes is enhanced. Calcined Shi Jue Ming also gains astringent, acid-neutralizing, and hemostatic actions not present in the raw form, due to the conversion of calcium carbonate to calcium oxide.

When to use this form

Use calcined Shi Jue Ming for eye conditions (especially topical application as water-ground powder for corneal opacities), for excess stomach acid with epigastric pain, for non-healing sores, and for external bleeding. When the primary goal is calming the Liver and subduing Yang (e.g. for hypertension), the raw form is preferred.

Common Ingredient Pairs

These ingredients are traditionally combined with Shi Jue Ming for enhanced therapeutic effect

Ju Hua
Ju Hua Shi Jue Ming 15-30g : Ju Hua 9-12g

Shi Jue Ming is heavy and sinking, subduing Liver Yang from below, while Ju Hua (chrysanthemum) is light and aromatic, clearing Liver Heat and gently nourishing Liver Yin from above. Together they create a comprehensive approach to clearing Liver Heat and brightening the eyes that neither achieves alone. The pair excels at treating eye conditions because it addresses both the excess (Fire) and the resulting visual symptoms simultaneously.

When to use: Eye redness and pain from Liver Fire, blurred vision, excessive tearing, photophobia, or visual dimness with underlying Liver Heat.

Mu Li Ke
Mu Li Ke 1:1 (both 15-30g)

Both are salty, cold shell substances that subdue Liver Yang and anchor rising Yang. Together they create a powerful synergy for pulling excessive Yang downward, with stronger anchoring force than either herb alone. Mu Li additionally calms the spirit and softens hardness, while Shi Jue Ming is stronger at brightening the eyes.

When to use: Liver Yang rising with severe headache, dizziness, irritability, and tinnitus, especially in the context of hypertension.

Xia Ku Cao
Xia Ku Cao Shi Jue Ming 30g : Xia Ku Cao 15-30g

Shi Jue Ming subdues Liver Yang from below with its heavy, sinking quality, while Xia Ku Cao (prunella spike) clears Liver Fire and dissipates nodules from above. Together they provide both anchoring and active Fire-clearing, making the combination more effective for patterns where Liver Fire and Liver Yang excess coexist.

When to use: Liver Fire headache with hypertension, red painful eyes, irritability, and a bitter taste in the mouth.

Shu Di Huang
Shu Di Huang Shi Jue Ming 15-30g : Sheng Di Huang 12-15g

Shi Jue Ming subdues excess Liver Yang, while Sheng Di Huang (raw rehmannia) nourishes Yin and cools Blood. This pairing treats both the branch (Yang rising) and the root (Yin deficiency). Sheng Di Huang replenishes the depleted Yin foundation so that Yang can be properly anchored.

When to use: Liver and Kidney Yin deficiency with secondary Yang rising, presenting with dizziness, headache, dry eyes, and a thin, rapid pulse.

Nu Zhen Zi
Nu Zhen Zi Shi Jue Ming 15-30g : Nu Zhen Zi 10-15g

Shi Jue Ming calms the Liver and clears Liver Heat, while Nu Zhen Zi (ligustrum fruit) nourishes Liver and Kidney Yin. Together they strengthen the Liver's capacity to maintain clear vision. The pair is particularly effective for chronic eye problems rooted in deficiency, since Nu Zhen Zi provides nourishment while Shi Jue Ming provides its specific eye-brightening action.

When to use: Liver and Kidney Yin deficiency with dim vision, dizziness, headache, tinnitus, and sore lower back.

Key Formulas

These well-known formulas feature Shi Jue Ming in a prominent role

Tian Ma Gou Teng Yin 天麻钩藤饮 Deputy

This is the most widely used formula for Liver Yang rising with hypertension, headache, and dizziness. Shi Jue Ming serves as Deputy at 18g, reinforcing the Liver-calming action of the King herbs (Tian Ma and Gou Teng) with its heavy, anchoring quality. The formula perfectly showcases Shi Jue Ming's core action of subduing Liver Yang.

Ming Mu Di Huang Wan 明目地黄丸 Deputy

This formula builds on Liu Wei Di Huang Wan (Six-Ingredient Rehmannia Pill) by adding eye-specific herbs including Shi Jue Ming (calcined). It showcases the herb's eye-brightening action in the context of Liver and Kidney Yin deficiency, treating blurred vision, dry eyes, photophobia, and excessive tearing.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Zhen Zhu Mu
Shi Jue Ming vs Zhen Zhu Mu

Both are salty, cold shell substances that subdue Liver Yang and brighten the eyes. However, Zhen Zhu Mu (mother of pearl) additionally calms the spirit and is preferred when Liver Yang rising is accompanied by significant anxiety, palpitations, or insomnia. Shi Jue Ming has a stronger specific action on the eyes and is the better choice when eye symptoms are the primary concern.

Jue Ming Zi
Shi Jue Ming vs Jue Ming Zi

Both share the name 'Jue Ming' (restoring brightness) and both clear Liver Heat to brighten the eyes. However, Jue Ming Zi (cassia seed) is a plant seed rather than a shell, so it lacks the heavy, Yang-anchoring quality of Shi Jue Ming. Jue Ming Zi is better for Liver Fire with constipation (it moistens the intestines), while Shi Jue Ming is superior for Liver Yang rising with dizziness and headache due to its heavy, subduing nature. Shi Jue Ming also works for both deficiency and excess eye conditions, whereas Jue Ming Zi is mainly for excess Heat patterns.

Mu Li Ke
Shi Jue Ming vs Mu Li Ke

Both are salty, cold shells that subdue Liver Yang. Mu Li (oyster shell) has a broader range of actions: it also calms the spirit, softens hardness and dissipates nodules, and in its calcined form astringes sweat and fluids. Shi Jue Ming is more narrowly focused on the Liver and eyes and is the preferred choice when eye conditions are prominent. For pure Liver Yang subduing, the two are often used together.

Therapeutic Substitutes

Legitimate clinical replacements when Shi Jue Ming is unavailable, restricted, or contraindicated

Sheng Mu Li + Xia Ku Cao

Mu Li Ke
Mu Li Ke 牡蛎壳
Oyster shell Provides the heavy, anchoring, Yang-subduing action; use raw (sheng) form at ~15-30g
Xia Ku Cao
Xia Ku Cao 夏枯草
Self-heal spike Contributes Liver-heat clearing and dispersing action; ~9-15g

Covers: Covers Shí Jué Míng's primary action of calming the Liver and subduing rising Yang, particularly in patterns of Liver-Yang uprising with dizziness, headache, and irritability. Multiple Chinese clinical substitution references document this combination as the main documented replacement for Shí Jué Míng's anchoring function.

Does not cover: The Yang-subduing (潜阳) strength of this combination is weaker than Shí Jué Míng, though its Heat-clearing action is comparatively stronger. It does not provide Shí Jué Míng's specific nourishing of Liver Yin or its direct benefit to the eyes (brightening vision, treating visual obstruction and night blindness). Not suitable as a substitute when the primary indication is an eye condition.

Use when: When Shí Jué Míng is unavailable or difficult to source and the primary presentation is Liver-Yang uprising (dizziness, headache, hypertension pattern) with a significant Heat component. The enhanced Heat-clearing makes this combination particularly useful when Heat signs predominate.

Zhen Zhu Mu + Sheng Mu Li

Zhen Zhu Mu
Zhen Zhu Mu 珍珠母
Mother-of-Pearl Shell Provides heavy anchoring, calms the Liver, and also benefits the eyes; ~15-30g
Mu Li Ke
Mu Li Ke 牡蛎壳
Oyster shell Reinforces the subduing of Yang and adds astringency; use raw (sheng) form at ~15-30g

Covers: Covers the heavy, anchoring, Liver-Yang subduing action of Shí Jué Míng. Zhēn Zhū Mǔ shares the closest profile to Shí Jué Míng among shell-based substances — both are salty, cold, enter the Liver, and can brighten the eyes. This combination is documented in Chinese clinical substitution literature as an alternative to the Mǔ Lì + Xià Kū Cǎo pairing.

Does not cover: Still weaker overall than Shí Jué Míng in subduing Yang. Zhēn Zhū Mǔ has a stronger shen-calming (安神) action than Shí Jué Míng, which shifts the treatment emphasis. Does not fully replicate Shí Jué Míng's specific Yin-nourishing and visual-restoring actions in chronic deficiency conditions.

Use when: A reasonable alternative when Shí Jué Míng is unavailable and the patient also has significant restlessness, anxiety, or sleep disturbance alongside Liver-Yang uprising, as Zhēn Zhū Mǔ's stronger shen-calming action may be an added benefit in that context.

Jue Ming Zi + Mi Meng Hua

Jue Ming Zi
Jue Ming Zi 决明子
Cassia seed Clears Liver Heat and brightens the eyes; ~9-15g
Mi Meng Hua
Mi Meng Hua 密蒙花
Pale Butterflybush Flower Clears Liver Heat, brightens the eyes, and disperses superficial visual obstruction; ~6-9g

Covers: Covers Shí Jué Míng's secondary action of clearing the Liver and brightening the eyes (清肝明目), specifically for eye conditions driven by Liver Heat — red, painful eyes, photophobia, superficial visual obstruction (yì zhàng), and blurred vision. Documented in Chinese clinical substitution literature specifically for this indication.

Does not cover: Does NOT cover the heavy anchoring and Yang-subduing (平肝潜阳) function of Shí Jué Míng at all. Jué Míng Zǐ and Mì Méng Huā are both relatively light herbs with no significant weight or sinking properties. This substitution is entirely inappropriate for Liver-Yang uprising patterns presenting as dizziness, hypertension, or headache.

Use when: Only when the clinical indication is primarily an eye condition driven by Liver Heat (red eyes, photophobia, early visual obstruction) and the Yang-anchoring action is not required — for instance, when Shí Jué Míng is unavailable but the formula is targeting eye disease rather than hypertension or dizziness.

Identity & Adulterants

Related species and common adulterations to be aware of when sourcing Shi Jue Ming

Shi Jue Ming is sometimes confused with Zhen Zhu Mu (珍珠母, mother-of-pearl from freshwater mussel shells, Margaritifera or Pteria species). While both have similar Liver-calming and eye-brightening functions, Zhen Zhu Mu has a stronger calming and spirit-settling action, whereas Shi Jue Ming is stronger at clearing Liver Heat and treating eye diseases. They can be distinguished by shape: abalone shells are ear-shaped with respiratory holes, while Zhen Zhu Mu comes from bivalve mussels with paired symmetrical shells. Adulterants may include shells from non-medicinal marine gastropods or heavily degraded shells that have lost their nacreous layer. Ensure the characteristic row of blow-holes is present to confirm authentic abalone origin.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any ingredient.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Shi Jue Ming

Non-toxic

Shi Jue Ming is classified as non-toxic in both classical and modern sources. The Ming Yi Bie Lu explicitly states it is 'without toxicity' (无毒). Its primary chemical constituent is calcium carbonate (over 90%), along with small amounts of organic proteins, amino acids, and trace minerals including magnesium, iron, zinc, and iodine. There are no known toxic components. The main safety concern relates not to toxicity but to its strongly cold nature, which can damage Spleen and Stomach Yang when used inappropriately or in excessive doses in vulnerable patients.

Contraindications

Situations where Shi Jue Ming should not be used or requires extra caution

Caution

Spleen and Stomach deficiency cold (脾胃虚寒) with poor digestion. Shi Jue Ming is salty and cold in nature, and its calcium carbonate content has antacid properties. In people with already weak, cold digestive systems, it can further impair Spleen and Stomach function, worsening symptoms like loose stools, poor appetite, and abdominal cold pain.

Caution

Absence of Liver Yang rising or Liver Fire. Shi Jue Ming's cold, heavy-settling nature is specifically designed to calm excess Liver Yang and cool Liver Fire. Using it when these patterns are absent, such as in cases of Liver or Kidney Yang deficiency, would be inappropriate and could cause harm by further depleting Yang.

Caution

Known allergy to shellfish or mollusk products. Since Shi Jue Ming is derived from abalone shell, individuals with shellfish allergies should avoid it as a precaution, although the shell is primarily mineral in composition.

Caution

Concurrent use with Xuan Fu Hua (Inula flower). The classical text Ben Cao Jing Shu states that Shi Jue Ming 'fears' (畏) Xuan Fu Hua, and some sources also note it 'clashes with' (反) Yun Mu (mica). Although these are not part of the standard Eighteen Incompatibilities or Nineteen Mutual Fears lists, they are traditionally noted cautions.

Classical Incompatibilities

Traditional Chinese pharmacological incompatibilities — herbs or substances to avoid combining with Shi Jue Ming

Shi Jue Ming does not appear on the standard Eighteen Incompatibilities (十八反) or Nineteen Mutual Fears (十九畏) lists. However, the Ben Cao Jing Shu (本草经疏) notes that it 'fears Xuan Fu Hua (旋覆花, Inula flower)', and the Ben Cao Qiu Yuan (本草求原) states that it 'clashes with Yun Mu (云母, mica)'. These are secondary traditional cautions rather than the standard classical incompatibilities.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at standard doses during pregnancy when prescribed by a qualified practitioner, but caution is warranted. Its cold nature and heavy-settling properties mean it should be avoided in pregnant women with Spleen-Stomach deficiency cold or weak digestion. Some commercial sources advise against use during pregnancy as a general precaution. There is no classical prohibition specific to pregnancy, and the herb does not have known uterine-stimulating properties. However, its strong cold nature could theoretically affect fetal development if used in large doses or for prolonged periods without monitoring.

Breastfeeding

No specific classical or modern contraindications for breastfeeding have been documented. As a primarily mineral substance (calcium carbonate with trace proteins), transfer of active compounds through breast milk is considered minimal. However, its cold nature may theoretically affect lactation in women with underlying Spleen-Stomach cold deficiency. Use with caution and under practitioner guidance during breastfeeding.

Children

Can be used in children at reduced doses proportional to age and body weight, typically one-third to one-half of the adult dose. Due to its cold nature, particular care should be taken in children with weak digestion or Spleen deficiency. Always crush and decoct first (先煎) as for adults. The powdered, calcined form may be easier to administer to children.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Shi Jue Ming

Antacids and acid-suppressing medications: Shi Jue Ming's primary component is calcium carbonate, which is itself an antacid. Concurrent use with proton pump inhibitors, H2 blockers, or other antacids may result in excessive acid neutralization and altered absorption of other medications that require an acidic gastric environment.

Calcium supplements and calcium-containing medications: Combining Shi Jue Ming with supplemental calcium or calcium-rich medications could potentially lead to excessive calcium intake, particularly relevant for patients with kidney disease or those prone to hypercalcaemia.

Antihypertensive medications: Given Shi Jue Ming's traditional use and pharmacological evidence for blood pressure-lowering effects, concurrent use with antihypertensive drugs may have an additive effect. Blood pressure should be monitored if used alongside such medications.

Tetracycline and fluoroquinolone antibiotics, and iron supplements: As with any calcium-rich substance, Shi Jue Ming may reduce absorption of these drugs if taken simultaneously due to chelation. Allow at least 2 hours between doses.

Dietary Advice

Foods and dietary considerations when taking Shi Jue Ming

When taking Shi Jue Ming for Liver Yang rising or Liver Fire patterns, avoid hot, spicy, and pungent foods such as chilli peppers, garlic, strong alcohol, and fried or greasy foods, as these can aggravate Liver Heat and counteract the herb's cooling effects. Favour cooling, Liver-nourishing foods such as leafy green vegetables, celery, chrysanthemum tea, and goji berries. Because Shi Jue Ming is cold in nature, those with sensitive digestion should consume warm, easily digestible foods alongside it to protect the Stomach.

Botanical Description

Physical characteristics and morphology of the Shi Jue Ming source animal

Shi Jue Ming is not derived from a plant but from the shell of several species of abalone, a type of marine gastropod mollusk in the family Haliotidae. The most commonly used species are Haliotis diversicolor Reeve (known as the nine-hole abalone or 'bright-bottom' variety), Haliotis discus hannai Ino (the wrinkle-plated abalone or 'hairy-bottom' variety), and Haliotis ovina Gmelin (the sheep abalone, a larger variety). Other accepted species include H. ruber, H. asinina, and H. laevigata.

Abalones are marine snails with a single, flattened, ear-shaped shell. They cling tightly to rocky substrates in shallow coastal waters, feeding on algae and kelp. The shell is elongated and oval, with a characteristic row of respiratory holes (blow holes) along one edge. In H. diversicolor, there are typically 7 to 9 open holes (hence the traditional name 'nine-hole snail'). The outer surface of the shell is rough, dark reddish-brown or greenish-grey with irregular growth lines and often encrusted with marine organisms. The inner surface displays a brilliant, iridescent mother-of-pearl luster with striking blue, green, and pink hues.

Sourcing & Harvesting

Where Shi Jue Ming is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Summer and autumn (May to September), when abalones are most actively harvested from coastal waters.

Primary growing regions

The primary producing regions (道地产区) are the coastal provinces of Guangdong, Fujian, and Shandong in China. Hainan and Liaoning provinces also contribute significant production. Haliotis diversicolor (the nine-hole abalone) is predominantly found along the southern coast, particularly in Guangdong and Fujian. Haliotis discus hannai (the wrinkle-plated abalone) is more common in the cooler northern waters of Shandong and Liaoning. Other species used medicinally come from Australia and New Zealand. Wild abalone has become increasingly scarce due to overharvesting, and much of the current supply comes from aquaculture farming operations along the Chinese coast.

Quality indicators

Good quality Shi Jue Ming shells are large, thick, and heavy, with a clean, intact inner surface. The inner surface should display a vivid, lustrous mother-of-pearl iridescence with brilliant blue, green, and pink hues. The most prized form is the 'nine-hole' variety (Jiu Kong Shi Jue Ming, 九孔石决明) from Haliotis diversicolor, which should have 7 to 9 clearly visible open respiratory holes along the shell edge. The outer surface should be free of excessive marine encrustation after cleaning. The shell should have no strong odour and only a slightly salty taste. Avoid shells that are thin, cracked, heavily eroded, or that have lost their inner pearly luster, as these indicate degradation or poor storage.

Classical Texts

Key passages from the classical Chinese medical texts that describe Shi Jue Ming and its therapeutic uses

Ming Yi Bie Lu (名医别录)

Original: 「主目障翳痛，青盲。」

Translation: "Primarily treats eye obstructions, corneal opacity with pain, and blue-green blindness (a form of visual impairment)."

Note: This is the earliest major classical text to record Shi Jue Ming, classifying it as an upper-grade medicinal with a salty, neutral flavour and no toxicity.

Hai Yao Ben Cao (海药本草)

Original: 「主青盲内障，肝肺风热，骨蒸劳极。」

Translation: "Primarily treats blue-green blindness with internal eye obstruction, wind-heat of the Liver and Lung, and steaming bone disorder from extreme taxation."

Ben Cao Jing Shu (本草经疏)

Original: 「石决明，乃足厥阴经药也。足厥阴开窍于目，目得血而能视，血虚有热，则青盲赤痛障翳生焉。咸寒入血除热，所以能主诸目疾也。」

Translation: "Shi Jue Ming is a medicinal that enters the Foot Jueyin (Liver) channel. The Foot Jueyin opens to the eyes. The eyes rely on Blood to see. When Blood is deficient with Heat, blue-green blindness, redness, pain, and corneal opacity arise. Its salty, cold nature enters the Blood and clears Heat, which is why it can treat all eye diseases."

Yi Xue Zhong Zhong Can Xi Lu (医学衷中参西录) by Zhang Xichun

Original: 「石决明味微咸，性微凉，为凉肝镇肝之要药。肝开窍于目，是以其性善明目。」

Translation: "Shi Jue Ming has a slightly salty taste and slightly cool nature. It is a key medicinal for cooling and sedating the Liver. The Liver opens to the eyes, and therefore its nature is excellent at brightening the eyes."

Yao Yao Fen Ji (要药分剂)

Original: 「石决明大补肝阴，肝经不足者，断不可少。」

Translation: "Shi Jue Ming greatly supplements Liver Yin. For those with insufficiency of the Liver channel, it is absolutely indispensable."

Historical Context

The history and evolution of Shi Jue Ming's use in Chinese medicine over the centuries

Shi Jue Ming was first recorded in the Ming Yi Bie Lu (Miscellaneous Records of Famous Physicians), a text compiled around the Later Han to Wei-Jin period, where it was classified as an upper-grade medicinal. The name 'Shi Jue Ming' (石决明) literally means 'stone that determines brightness', reflecting its primary classical use for treating eye disorders. The character 决 (jue, meaning 'to decide' or 'to determine') combined with 明 (ming, meaning 'brightness' or 'clarity') directly references the herb's reputation for restoring clear vision.

Early usage focused almost entirely on eye diseases, including corneal opacities, night blindness, and visual obstruction. It was during the Tang dynasty that the Hai Yao Ben Cao (Materia Medica of Overseas Medicines) expanded its indications to include Liver and Lung wind-heat and steaming bone disorder. The understanding of Shi Jue Ming as a Liver-calming, Yang-anchoring medicinal developed more fully in later periods, particularly through the work of Zhang Xichun in the late Qing and early Republican era, who praised it as a "key medicinal for cooling and sedating the Liver" and noted its value in treating headache and dizziness caused by Liver Qi and Liver Fire driving Blood upward to the brain.

Notably, the Ben Cao Yan Yi (Materia Medica Expanded in Meaning) distinguished between the flesh and the shell, noting that both can be used medicinally but that the shell, when ground and water-floated, is specifically applied to external eye obstructions. The abalone itself has long been a prized delicacy in Chinese cuisine, and the use of its shell as medicine represents a characteristically Chinese approach to utilizing all parts of natural resources for health.

Modern Research

A published study investigating the pharmacological effects or clinical outcomes of Shi Jue Ming

1

Antioxidant activity of polysaccharides isolated from abalone shell (Haliotis discus hannai Ino) (Preclinical, 2014)

Zhu BW et al., J Agric Food Chem, 2014, 62(41), 9895-9904

Researchers extracted a polysaccharide (ASP-1) from abalone shell and found it had significant free radical scavenging effects, with superoxide radical scavenging reaching 86.2% at 5.0 mg/mL, comparable to ascorbic acid (95.6%). This suggests the shell contains bioactive components beyond simple calcium carbonate that may contribute to its traditional medicinal properties.

PubMed

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.