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Lotus Gemology Publications • Substance
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Hits: 18832
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Madagascar Sapphire: Low-Temperature Heat Treatment Experiments
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by E. Billie Hughes and Rosey Perkins |
Hits: 734
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Madagascar Ruby & Sapphire | Ruby & Sapphire: A Gemologist's Guide
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by Richard W. Hughes, Wimon Manorotkul & E. Billie Hughes |
Hits: 1106
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Ruby & Sapphire (Corundum) Inclusions • The Lotus Gemology Crystal Registry
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by E. Billie Hughes and Richard W. Hughes |
Hits: 381
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Spinel Inclusions • An Exercise in Aesthetics
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by E. Billie Hughes, John I. Koivula, Wimon Manorotkul, Nathan Renfro and Richard W. Hughes |
Hits: 2936
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Gem Testing Labs • Tips on Choosing a Colored Gem Testing Lab • Lotus Gemology
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by Lotus Gemology |
Hits: 1115
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Laos Sapphires • Laos – Land of a Million Elephants... & Sapphires
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by Richard W. Hughes, Auslan Ishmael, Flavie Isatelle & Peter Wang |
Hits: 1209
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Colored Stone Grading • A Heretic's Guide
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by Richard W. Hughes, with E. Billie Hughes & Wimon Manorotkul |
Hits: 5742
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Six-Rayed Star in Sapphire from Myanmar
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by E. Billie Hughes |
Hits: 2696
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Pressure Heated Sapphire • Squeezing Sapphire • Corundums treated with high temperatures and low pressure (HT+P)
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by [see below for authors] |
Hits: 7451
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