Books: In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels

Review of Franco Cologni’s In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels.

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图书:《戒指 — 象征权力、爱情和忠诚的珠宝》(Rings – Jewelry of Power, Love and Loyalty) (英语)

Review of Diana Scarisbrick’s Rings: Jewelry of Power, Love and Loyalty.

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Jadeite Bangle with the Appearance of Polymer Treatment

A jadeite jade bangle is submitted for lab testing to investigate the possibility of treatment.

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Record-Size Natural Moissanite Crystals Discovered in Israel

Natural moissanite crystals found in Israel have broken world records, with evidence of larger crystals in the area.

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Unusual Optical Effect in Blue Sapphire | Gems & Gemology

A bluish violet sapphire shows surprising effects under lab examination.

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祖母绿的三相式内含物及其对原产地鉴定的影响 (英语)

Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.

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Experimental Studies on the Heat Treatment of Baltic Amber

Amber samples were heat-treated, using various procedures and parameters, in an effort to reproduce materials found in the jewelry market.

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天然钻石上 CVD 合成膜的长期坚固性 (英语)

A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.

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Rare Faceted Wurtzite

A stone submitted for identification is revealed to be the first wurtzite examined by the GIA lab.

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Star Opal

An opal featuring a rare six-rayed star is examined in GIA's Bangkok lab.

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Tenebrescent Zircon

Color modification is observed in a reddish orange zircon at the Bangkok laboratory.

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黄色化学蒸气沉淀法合成钻石 (英语)

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

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Bumble Bee “Jasper” from Indonesia

Bumble Bee jasper, first discovered on Java, exhibited at the Tucson Gem and Mineral Show.

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2014年图森展会的内部观察

2014年图森宝石和矿物展的报道,包括丰富多彩的幻灯片和与行业专业人士的深度访谈。

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Gemfields Inaugural Rough Ruby Auction in Singapore

Join GIA on location at the inaugural Gemfields Mozambique ruby auction and go behind the scenes for an insider’s look at the rough gemstone auction world.

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《宝石与宝石学》(Gems & Gemology) 80 周年庆 :照片之旅

通过这次虚拟旅行探索“科学之美” :集合了由 Harold 和 Erica Van Pelt 所拍摄的各种标志性的宝石、珠宝、矿物和雕塑的照片。

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戴比尔斯看货会将迎来新变化

戴比尔斯七月的看货会不太可能有显著的价格上涨,但公司高管提出了对看货会体系的一系列改革措施,将在 1 月份开始实行。

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春季拍卖会: 超级富豪 的消费热潮

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宝石和珠宝估价世界的内幕

Teri Brossmer、Carole Richbourg 和 Gina D'Onofrio 在 GIA 的卡尔斯巴德校区与学生们分享了有关宝石和珠宝估价的建议与见解。

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天然钻石上的化学蒸气沉淀法 (CVD) 合成膜的长期坚固性

GIA 卡尔斯巴德鉴定所检测了一颗涂有 CVD 合成膜的天然钻石。

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