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Há 2 dias · Groom has traveled all over the world to purchase emerald rough, and his current focus is Afghanistan. In Tucson, he demonstrated to us the art of rough purchasing and the critical decisions that must be made during this process. Groom started by opening a parcel of about 260 g of rough emerald (figure 1), which he valued at a minimum of $600,000.
Há 4 dias · One-of-a-Kind Designs from Zoltan David. Figure 1. Zoltan David working at the bench in his studio, located in his store in Austin, Texas. Photo by Patti David. 2022 marks the 42nd year in the industry for iconic jewelry designer Zoltan David (figure 1). At the AGTA show, the authors had an opportunity to converse with David about his passion ...
Há 3 dias · For 30 years, Michael Dyber has designed and fashioned gems, such as this aquamarine, in ways that please the eye and amaze the connoisseur. Photo by Albert Salvato. Michael Dyber (Rumney, New Hampshire) discussed how 30 years as a gem artist have influenced his techniques and informed the creation of his optically stunning carvings (figure 1).
Há 5 dias · Thailand’s most sacred religious icon is called the Emerald Buddha, even though it’s carved from green jadeite. The first known emerald mines were in Egypt, dating from at least 330 BC into the 1700s. Cleopatra was known to have a passion for emerald, and used it in her royal adornments. Emeralds from what is now Colombia were part of the ...
Há 3 dias · Topaz Description. This selection of gems from Ouro Prêto, Brazil, and Russia's Ural Mountains, displays the golden orange to pinkish red color range of precious topaz. The gems range from 7.61 to 14.33 carats in size. Many consumers know topaz as simply an inexpensive blue gem.
Há 5 dias · New Emerald Production from Belmont. Andrew Lucas and Tao Hsu. Download PDF. Second-generation stones from Brazil’s Canaan mine are often cleaner and lighter in color than those from the first geological event. Photo by Eric Welch/GIA. The Belmont mine in Brazil has been a key emerald supplier in the global market for the past 40 years.
Há 3 dias · 跟随 GIA 实地宝石学家参观泰国复苏的矿区和宝石市场。. 在本视频中，您将跟随由 GIA 实地宝石学家 Vincent Pardieu（文森特·珀杜）带领的团队，参观泰国东部的一个蓝宝石矿和尖竹汶府繁华的宝石市场。. 该地区距离曼谷仅数小时路程，在那里很容易收集参考 ...
