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THE GEMHOOD EDITORIAL LIBRARY

Coral gemstone guide

Precious coral in jewellery is an organic biogenic material rather than a mined crystalline gemstone. Check species and provenance documentation where relevant, along with any dyeing or reconstruction; wildlife-trade restrictions may apply.

Gem facts · Quality considerations · Care & meaning

Coral gemstone — example specimen A study in colour and character
Typical colourRed, pink, orange and white
Mineral / materialOrganic marine calcium carbonate
Mohs hardness3–4
Birthstone linkNo modern birthstone listing
COLOUR & APPEARANCE

Every shade has a story.

Typical appearances for Coral. Natural stones vary, and lighting or treatment can change their appearance.

Red
Pink
Orange
White
Organic marine calcium carbonate Mohs 3–4
WORLDWIDE OCCURRENCES

Where Coral is found

Marine sources; traceability varies

This entry describes a wider region or material without a single country attribution.

These are representative geological or commercial sources, not certified provenance for an individual stone. Country of origin should be substantiated independently when relevant to value.

What is Coral?

Precious coral in jewellery is an organic biogenic material rather than a mined crystalline gemstone. Typical material appears in red, pink, orange and white shades, and is commonly described as organic marine calcium carbonate. The Mohs hardness for this material is approximately 3–4; hardness refers to resistance to scratching, not to breaking, cleavage or sensitivity to chemicals. Check species and provenance documentation where relevant, along with any dyeing or reconstruction; wildlife-trade restrictions may apply. Typical geological or commercial source regions include Marine sources; traceability varies; this does not establish the provenance of an individual gem. Avoid perfume, acids, bleach, ultrasonic cleaning and prolonged sun exposure; wipe with a soft cloth. Ask for confirmation of identity, natural or lab-created status, and any treatments when choosing an individual stone.

History and cultural context

Coral is included in this educational directory for its distinctive material, appearance and cultural or collector interest. Precious coral in jewellery is an organic biogenic material rather than a mined crystalline gemstone. Gem varieties and trade names can overlap: the precise identity of a particular specimen should be independently confirmed when relevant.

Colour and appearance

Red, pink, orange and white

Jewellery suitability

Check species and provenance documentation where relevant, along with any dyeing or reconstruction; wildlife-trade restrictions may apply.

Caring for Coral

Avoid perfume, acids, bleach, ultrasonic cleaning and prolonged sun exposure; wipe with a soft cloth.

Cleaning guidance

Avoid perfume, acids, bleach, ultrasonic cleaning and prolonged sun exposure; wipe with a soft cloth.

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Educational articles describe gemstone types and common trade practices. They are not individual gemological certificates, current price appraisals or medical advice.

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