From the Book - Revised edition.
What is a crystal? A world of crystals Natural beauty On the surface Inside crystals Crystal color Identification Natural growth Crystal habits Extraction Growing crystals Crystals at work Crystal vibrations Quartz Diamond Corundum Beryl Opal Other gemstones Collectors' 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.
From the Book - American edition.
