サンストーンの旅、第3部: サンストーンビュート
「オデッセイ・サンストーン」シリーズの最終回では、サンストーン・ビュート鉱山(見事な緑色と二色の宝石が豊富に産出される新しい鉱山)を紹介します。
Book Review: From a Snowflake to an Iceberg: The McFerrin Collection
Useful Visual Clue Indicating Corundum Heat Treatment
Shows the conversion of limonitic residues to hematite in surface-reaching inclusions, a practical indication of heat-treated corundum.
Striving for Timeliness and Synergy
Unusual Epigenetic Malachite Discs in Quartz
The uncommon occurrence of epigenetic malachite, as found in this quartz, can result in vivid green color.
ピンキッシュブラウンの大きなCVD合成ダイヤモンド (英語)
Report on the analysis of an unusually large CVD synthetic diamond, unique in that its Faint to Light pinkish brown color doesn’t appear to be the result of post-growth treatment.
Amber with Insect-Bearing Filling
Natural amber beads were found to have been filled with plastic and a variety of insects.
Turquoise with Fingerprint Pattern
Imitation Rainbow Moonstone Assemblage
Examination of an imitation rainbow moonstone assemblage containing plastic-coated gypsum.
Diamond with Unusual Laser Manufacturing Remnant
An unusual laser manufacturing remnant, possibly once used to guide a gem cutter, was left behind in a clock-like shape.
Enormous South Sea Cultured Pearl Filled with Cultured Pearls
An unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.
A Useful Technique to Confirm the Hydrophane Nature of Opal
Observing a water drop’s interaction with opal, as well as refractive index, can confirm a specimen’s hydrophane nature with less risk of breakage than total immersion.
The Museum of London’s Extraordinary Cheapside Hoard
The history and mysteries behind a treasure of jewels hidden during the 1600s, a window to the past being fully opened to the public for the first time since a chance discovery a century ago.
Three Occurrences of Oregon Sunstone
Chronicles a visit to the high desert of eastern Oregon to examine commercial sources of this natural copper-bearing feldspar.
「より豊かなことは、より豊かなこと」のバーチャルツアーを体験する
GIA博物館の展示「より豊かなことは、より豊かなこと:Tony Duquette-Hutton Wilkinson(トニー・デュケット-ハットン・ウィルキンソン)の宝飾品 」は、有名なハリウッドのデザイナーによる宝飾品を披露しています。
炭化ホウ素:ブラックダイヤモンドの新たな模造石
Specimen sold as black diamond identified as ceramic material commonly used in hard-plating applications
合成ダイヤモンド:そこにはどれくらいありますか?
小包の非公開合成石が宝石学ラボによって特定されたという報告は、宝石市場に多くの合成石が紛れている可能性があるとの新たな疑問が浮上しました。ただしそれには反対の意見も多くあります。

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