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With more than 350 color photos of both popular and rare examples
expertly modeled and colorfully decorated Royal Copley figurines
Car and airplane kits were the most popular
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Collector's Guide to Quartz & Other Silica Minerals by Robert Lauf With more than 350 colorTable of Contents Quartz is prized by both mineral collectors and lapidary artists. Over 130 vivid photographs of these beautiful minerals are presented to show each mineral in its geological context. Superb examples are found in diverse geological settings from pegmatites to Alpine clefts and hydrothermal veins. The silica minerals are chemically simple, yet structurally complicated. Several high temperature and high pressure polymorphs are known. In