gemstone
Mother of Pearl
Nacre
AI-generated identification · may be incorrectMohs hardness of 3.5 to 4, iridescent white to silvery color, pearly luster, organic-mineral composite structure, specific gravity around 2.7.
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Physical properties
Mohs hardness of 3.5 to 4, iridescent white to silvery color, pearly luster, organic-mineral composite structure, specific gravity around 2.7.
Formation & geological history
Formed as an inner shell layer by mollusks through the deposition of aragonite platelets bound by conchiolin.
Uses & applications
Widely used in jewelry, decorative inlay work, buttons, and high-end accessories.
Geological facts
Nacre provides exceptional toughness and fracture resistance by deflecting cracks along microscopic interfaces.
Field identification & locations
Identified by its signature rainbow iridescence and organic origin; commonly sourced from pearl oysters and abalone.
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