Provides a concise description of each gemstone, photographs showing characteristics and distinguishing features, and information on where gemstones are found and their natural properties.

Includes index.

How this book works -- What are gemstones? -- How gemstones are formed -- Where gemstones are found -- Physical properties -- Crystal shapes -- Optical properties -- Natural inclusions -- Faceting -- Polishing, carving, and engraving -- Gems through the ages -- History and folklore -- Synthetic gemstones -- Imitation and enhancement -- Color key -- Precious metals -- Cut stones -- Organics.