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14 de out. de 2013 · John Woodmark, president of Desert Sun Mining and Gems (Depoe Bay, Oregon), updated us on the Ponderosa mine, which he calls the most productive source of Oregon sunstone (see above). Demand has increased annually over their 17 years of production, he said. With the larger excavator and high-capacity screen they brought on in 2015, they now ...
Há 3 dias · The Gemological Institute of America (GIA) invites all interested people to explore the fascinating world of gemology at the upcoming Couture and JCK Las Vegas shows.Attendees in Las Vegas will have the opportunity to dive deep into GIA's offerings through interactive displays, educational presentations, hands-on demonstrations, and the GIA Show Service Laboratory.
Há 4 dias · GIA 4Cs Carat Weight. Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to gold purity.) Just as a dollar is divided into 100 pennies, a carat is divided into 100 points.
Há 5 dias · Rex Guo’s Gem Cutting Journey. Rex Guo reflects on how his previous career as a software editor impacts his current work as a self-taught gem cutter who recuts faceted stones. While Guo enjoys the privilege of cutting from fine gem rough, about 80% of his work is in recuts. Given the ever-increasing price of rough material, recutting provides ...
6 de mai. de 2024 · Our guest Wim Vertriest, Manager at the Gemological Institute of America (GIA) Bangkok, offers a fascinating introduction to field gemology and the GIA’s col...
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- Rapaport Jewelry Pro
11 de mai. de 2024 · In addition to her volunteer work, Opal Stone Perlman is also a member of several professional organizations, including the Gemological Institute of America (GIA) and the American Gem Society (AGS). These organizations are dedicated to promoting the field of gemology and ensuring that the public has access to accurate information about gemstones.
22 de mai. de 2024 · Paula Crevoshay described 2018 as an “opulent year” and showed us several new pieces that celebrate nature. Her remarkable use of color draws in and enchants the viewer. She is working on a museum exhibition concept entitled Nature Art Science, with the intent of capturing how art is inspired by nature and how science is essential in the ...
