Gemstone, Definition, History, Types, & Facts

Gemstone, any of various minerals highly prized for beauty, durability, and rarity. A few noncrystalline materials of organic origin (such as pearl and amber) also are classified as gemstones. Of the more than 2,000 identified natural minerals, fewer than 100 are used as gemstones and only 16 have achieved importance.

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Gemstone, Definition, History, Types, & Facts