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Pearl
Perfect shining spheres. Lustrous baroque forms. Seductive strands, warm to the touch. Pearls are simply and purely organic.
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Assembled “Pearl” Filled with Wire
Microradiography reveals wire fillings within a “pearl” created from two separate specimens.
Red Beryl – Tucson 2014
Red beryl, mined from Utah and displayed in both loose form and in suites of jewelry, were seen at the AGTA show in Tucson.
Exceptional Gem Artistry in Sunstone, Rutilated Quartz, and Beryl – Tucson 2014
Stunning examples of gem cutting and design from the GJX Show in Tucson, Arizona.
Polymer-Impregnated Aventurine Quartz, a New Imitation of “Ice Jade”
A bangle, thought to be jadeite jade, is revealed by laboratory testing to be polymer-impregnated aventurine quartz.
Cultured Pearl Market Update – Tucson 2014
Cultured pearl market update from the 2014 gem shows in Tucson, Arizona.
Natural Pearls from Australian Pinctada Maxima
Explores the fascinating history of natural pearling in Australian waters and examines the properties that might help distinguish these natural pearls from those that are accidentally produced during the culturing process.
Spectral Characteristics of Natural-Color Saltwater Cultured Pearls from Pinctada Maxima
Natural-color saltwater cultured pearls (SWCPs) from Pinctada maxima were studied using UV-Vis-NIR and PL spectroscopy to better understand the mechanisms of their coloration and to separate them from other SWCPs with similar natural colors.
Cultured Pearl Farming and Production in the Federated States of Micronesia
The current production of cultured pearls from the black-lipped pearl oyster (Pinctada margaritifera) in the Federated States of Micronesia includes mostly beaded as well as blister and nonbead-cultured pearls in a wide array of colors.
Summer 2012 Gem News International
Update on the Identification of Dye Treatment in Yellow or “Golden” Cultured Pearls
Dye treatments in yellow or “golden” cultured pearls have improved to the point that some samples show little surface evidence.
Gem Localities of the 2000s
The past decade saw some impressive discoveries of diamonds and colored stones.
