gemstone
Pearl
Calcium Carbonate (Aragonite/Calcite) and Conchiolin
AI-generated identification · may be incorrectHardness of 2.5-4.5 on the Mohs scale, lustrous pearlescent sheen, white to cream color, organic amorphous structure.
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Physical properties
Hardness of 2.5-4.5 on the Mohs scale, lustrous pearlescent sheen, white to cream color, organic amorphous structure.
Formation & geological history
Formed organically inside the soft tissue of living shelled mollusks as a defense mechanism against irritants.
Uses & applications
Used primarily in fine jewelry, necklaces, earrings, and decorative art pieces.
Geological facts
Unlike traditional gemstones mined from the earth, pearls are entirely biological and produced by living marine or freshwater creatures.
Field identification & locations
Identified by its characteristic warm luster, organic origin, and reaction to acid; found globally in oceans and rivers.
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Pearl, primarily aragonite (CaCO₃) and conchiolin
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