ロシア皇族の歴代の宝飾品と王冠を記録した稀少な目録
ロマノフ王朝の素晴らしい宝石とジュエリーコレクションは、王室の宝石を紹介する数少ない現存の目録のうちの1冊、『Russia's Treasure of Diamonds and Precious Stones（ダイヤモンドと貴石、ロシアの財宝）』で記録として残っています。
ライトニングリッジ：上質のブラックオパールにおける世界の中心地
ライトニングリッジは、オパールの中でも最も望ましい上質のブラックオパールにおける、世界の中心地です。 2015年6月には、GIAのフィールドジェモロジストのチームが、オーストラリア、ニューサウスウェールズ州にある、この伝説的な町を訪問しました。 この上質なオパールの重要な原産地を共に探索しましょう。
Designer’s Inventive, ‘Outrageous’ Jewelry Wins Industry Awards
Emerging artist Trishala Ashok – who has won multiple design awards – looks beyond the mundane and minutiae of daily life to create her jewelry.
モンタナ州ロッククリーク産サファイア：採鉱の新時代が始まる
モンタナ州のロッククリークサファイア採鉱地区をGIAのフィールド調査で訪問し、原産地から直接これらの美しい石を収集する様子をご覧ください。
責任あるカラー：カラー宝石の倫理的問題と解決法 (英語)
Examines the challenges of ethical sourcing and production of colored stones, and what some industry leaders are doing to address the situation.
In Rainier’s Footsteps: Journey to the Chivor Emerald Mine (英語)
Chronicles the famed emerald source through the adventures of Peter W. Rainier, who directed the mine from 1926 to 1931 and restored its former glory.
Iridescent Spondylus Pearl
Iridescence is seen in a porcelaneous pearl examined at the Carlsbad laboratory.
Natural Blisters with Partially Filled Areas
Blisters examined in the Bangkok lab have been treated with an artificial filler.
Multiphase Fluid Inclusions in Blue Sapphires from the Ilmen Mountains, Southern Urals
Sapphires from Russia’s Ilmen State Reserve may provide insight into gem corundum from secondary placers.
Metallic Chromium Inclusions in Industrial By-Product Ruby
Inclusions in technogenic ruby slag help to separate this material from other specimens, both natural and synthetic.
Steam-Dyed Amber
Testing identifies a new treatment method as the cause of color in beeswax amber.
Australian Opal Beads with Blue Play-of-Color
Boulder opal in sandstone matrix is seen as beads in Tucson.
Garnet Inclusion Illusion
A quartz double cabochon showcases a garnet placed to imitate an inclusion.
Mining Diamonds in the Canadian Arctic: The Diavik Mine
Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.
The Fluid Art of Angela Conty
Angela Conty exhibits and discusses her work at the 2016 Tucson gem shows.
Robotic Colored Stone Cutting Machines
Master cutter Kiwon Jang demonstrates his newest cutting machine at Tucson’s AGTA show.
Spectral Characteristics of Pinctada Mazatlanica and Pinctada Margaritifera Pearl Oyster Species
Examination of shells from on P. mazatlanica proves the similarities between that species and P. margaritifera.
Fabergé Cossack Figures Created from Russian Gemstones
Hardstone figures of two Russian imperial bodyguards, commissioned in 1912 by Nicholas II, demonstrate the House of Fabergé’s meticulous detail and craftsmanship.
The Challenges of Cutting a Large Gem Opal Rough
A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface.
Inclusions in Burmese Amber
Examples of Burmese amber specimens with well-preserved inclusions that have become available in recent years.
.jpg "YMAL GIA Ed")
