Designed for beginners and experienced collectors alike, these field guides make identification of individual specimens sure, simple and straightforward. Each entry has a full color illustration as well as color-coded bands that provide at-a-glance facts for quick reference. Easy to use and beautiful to look at, this series is an invaluable resource for every collector.
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agate aluminum amber amethyst aquamarine Australia AXINITE beads beryl birefraction blue Brazil BRILLIANT CUT brown c°mp°sm Cabochon Cameo carved cat’s-eye CHALCEDONY chrysoberyl collectors colorless Composition coral corundum Crystal structure Crystal structure Trigonal CRYsTALs IN MATRIX Cubic cut en cabochon dark demantoid deposits diamond emerald faceted feldspar ﬁbrous ﬁne ﬁre ﬁrst former USSR fracture fragile garnet Gem-quality gemstones gold green grossular Hardness hexagonal imitate inclusions iridescence Italy ivory jewelry lapis lazuli layers LAZULITE localities include luster Madagascar massive material metallic mineral MIXED CUT Monoclinic Myanmar Namibia obsidian OCCURRENCE opal opaque orthoclase Orthorhombic OVAL pale pearls pebbles pegmatites perfect cleavage peridot pink platinum pleochroic polished popular prisms pyrite quartz rare reﬂected refractive REMARK rock crystal ruby rutile sapphire silicate silver sinhalite SiO2 soft spinel Sri Lanka stone surface synthetic Tanzania topaz tourmaline translucent transparent Trigonal turquoise usually variety vitreous luster yellow yellowish zircon