Become an eyewitness to the many different varieties of crystals and gems in this picture-led reference guide that will take you on a visual tour of the world of precious stones.

Includes index.

What is a crystal? -- A world of crystals -- Natural beauty -- On the surface -- Inside crystals -- Crystal color -- Identification -- Natural growth -- Good habits -- Extraction -- Growing crystals -- Crystals at work -- Good vibtrations -- Quartz -- Diamond -- Corundum -- Beryl -- Opal -- Other gemstones -- Collector's items -- Stones for carving -- Precious metals -- Organic gems -- What is it worth? -- Cutting gems -- Lore and legend -- At home -- Did you know? -- Identifying gemstones -- Find out more.