Van Nostrand's Standard Catolog of Gems1968 |
Contents
Introduction to Gems | 1 |
Supply and Marketing Information | 10 |
Rough Gemstones 23382383 | 53 |
Copyright | |
7 other sections not shown
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66 ovals 66 pale agate Amazonite amethyst aquamarine banded beads BERYL Brazil brilliant brills brown brownish Burma buyer cabochon gems cabochon grade cabochons calcite California cameos carats carver carvings catseye Ceylon chalcedony chatoyant chrysoberyl citrine clean ct collectors colorless coral corundum cracks cultured pearls cut gems dark green diam diameter diamond emerald engraved facet grade faceted gems fair FELDSPAR finest flawless flaws GARNET gems cut gemstones grad greenish hues Idar-Oberstein inclusions India jade jadeite jewelry lapidary light Madagascar massive material medium dark Mexico mineral moonstones Nephrite nodules opal orange ornamental oval cabs pale green pieces pink polish rare Rhodonite rock crystal rough ruby rutile sapphire sections seldom shape shell slabbed soft sold sometimes specimens star step cuts stones surface synthetic thick tigereye tourmaline translucent transparent tumbled gems tumbling grade uniform usually variety williamsite yellow yellow-green