Crystals explores the popular world of crystals through the significance ofcolour. Presenting 120 examples arranged in a detailed spectrum, it works bothas a crystal identifier that details the colour, shape, source, and rarity of120 examples; and as an insightful guide into crystals and colour healing. Thecrystals are printed in special inks on black backgrounds to fully capturetheir luminescence, and displayed in a central gallery of jewel-likeminiatures