Coral Mineral, Gemstone Geology, Properties, Formation

Coral is skeletal material produced by marine animals. Coral is organic and created by living organisms. The hardened skeleton remains and this material is used as a gemstone.

Gem Formation: How are Gemstones Created? - Gem Society

Rock and Gem (Paperback) Books Inc. - The West's Oldest Independent Bookseller

Common Beach Stone Identification (Including Dolomite, Quartz, Serpentine, Syenite, and More) - Owlcation

Gemstones of the World: Newly Revised Fifth Edition: Schumann, Walter: 9781454909538: Books

Aragonite: Mineral information, data and localities.

Agatized Coral - Stetson University

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Minerals - Physical Properties

Native element, Definition & Examples

Fire Opal Synthetic Gemstone: Meaning, Power, Properties

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