Articles about gemstones written by a GIA Graduate Gemologist. Each article includes photos and information about the gem's physical properties and geologic origin.
Group of precious and semiprecious stones—both uncut and faceted—in67cluding (clockwise from top left) diamo67nd, uncut synthetic 67sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or p67olished, is used to make jewelry or other adornments ...
New to gemstones? Curious about the different kinds of gemstones? Check out our gemstones list and discover a world of precious and semi-precious stones.
Browse our gemstone list with names, colors, and types of gems. Explore natural gems like ruby and sapphire at GemSelect for jewelry or collecting.
GIA’s Guide to Gemstones: Gem Encyclopedia GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
This gorgeous robin's egg blue gemstone has been connected with healing powers, promoting the wearer's standing and comprehensive range, protecting from wickedness, and bringing good fortune. Turquoise is an opaque, light to dark blue or blue-green treasure whose finest color is an intense blue.
List of 24 Gemstones with Names, Colors, & Pictures - Petra Gems
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.