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    Our Diamonds Are Selected With Well-Graded Elements Of The 4Cs: Cut, Color & Clarity. Focus On A Balance Of The 4Cs: Cut, Clarity, Color & Carat To Make A Smart Purchase.

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  1. 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 ...

  2. Há 4 dias · In March 2018, a GIA team traveled to Bridges Tsavorite’s Tucson office for a look at world-renowned gem cutter Victor Tuzlukov’s approach to cutting this rare gem. The 283.74 ct rough stone (figure 1) was mined by Bridges Tsavorite in Merelani, Tanzania, in September 2017.

  3. Há 4 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.

  4. Há 4 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 ...

  5. Há 5 dias · Stephen M. Avery: Celebrating Half a Century in Gem Cutting. Figure 1. With names like “Flaming Comet” and “It’s a Zoisite Party,” Avery’s gem sets have enchanted for decades. This three-piece set consists of a 6.22 ct golden tourmaline flanked by two aquamarines, 5.14 carats total. Photo by Sara Rey; courtesy of Stephen M. Avery.

  6. 22 de jul. de 2020 · Interesting Sapphires from Montana and Australia. Figure 1. Bicolor sapphires from the Rock Creek mine, Montana. Cutters took advantage of the color inhomogeneity of the rough to create these interesting color combinations. These stones range from 1.61 to 7.36 ct. Photo by Emily Lane; courtesy of Potentate Mining.

  7. Há 4 dias · At the AGTA show, Bridges Tsavorite unveiled the largest known square cushion-cut tsavorite, weighing 116.76 ct (see above). The 283.74 ct rough stone was mined by the company in Merelani, Tanzania, in September 2017. Bangkok-based gem cutter Victor Tuzlukov cut the stone at Bridges Tsavorite’s Arizona office over the course of a month in 2018.