A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public - Wade, Frank Bertram

Excerpt: ...appear reasonable that such was the case. He was next shown that his small true topazes scratched his large stones easily, but the large ones could get no hold upon the surfaces of the small ones. (It will be remembered that topaz has a hardness of 8, while quartz has a hardness of 7.) The explanation then followed that the two lots ... Read More

A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2013, Tredition Classics

ISBN-13: 9783849198039

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2013, Tredition Classics

ISBN-13: 9783849189174

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2012, Rarebooksclub.com, Miami FL

ISBN-13: 9780217436793

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2012, Rarebooksclub.com, Miami FL

ISBN-13: 9781153809580

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2010, Nabu Press, Charleston SC

ISBN-13: 9781172562626

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2010, Nabu Press

ISBN-13: 9781146733250

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A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public 2010, Nabu Press

ISBN-13: 9781149014417

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A Text Book of Precious Stones for Jewelers and the Gem-Loving Public 2009, BiblioLife, Charleston SC

ISBN-13: 9781103888191

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A Text Book of Precious Stones for Jewelers and the Gem-Loving Public 2009, BiblioLife

ISBN-13: 9781103888115

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