Identify 135 of the most sought after and popular gemstones, minerals and crystals through photos and descriptions of color variety, luster and transparency range. Scientific and metaphysical properties of each gemstone plus significant meanings or historical uses, or how it is formed. Suggested uses: o Buying Guide – identify metaphysical or historical uses of stones for you personally or as a meaningful gift o Collectors – handy identification and properties reference o Jewelry & Art – know the structure and durability of your materials for mounting or carving