What is a crystal?; a world of crystals; natural beauty; crystals - outside...; ...and inside; the colour of crystals; identification; natural growth; good habits; discovery - recovery; growing from seed; crystals at work; good vibrations; quartz; diamond; corundum; beryl; opal; other gemstones; collectors' items; stones for carving; precious metals; animal and vegetable; what is it worth?; making them sparkle; lore and legends; crystals at home; did you know?; identifying gemstones; find out more.