過去の書籍リスト: ナミビア産の漂砂ダイヤモンド
How old are diamonds? Are they forever?
Smit K.V., Shirey S.B. (2019) How old are diamonds? Are they forever? Gems & Gemology, Vol. 55, No. 1, pp. 102-109.
Kimberlites: Earths diamond delivery system
Smit K.V., Shirey S.B. (2019) Kimberlites: Earths diamond delivery system. Gems & Gemology, Vol. 55, No. 2, pp. 270-276.
ジュエリーの蝶結び：最後に与える仕上げの手法
蝶結びは、その時代のスタイルを反映するために蘇って適応しながら、はるか昔のジュエリーやファッションにおいて人気のあるモチーフおよび最後の仕上げの手法として使われています。
Pink Diamonds, Russia’s Amber Room, and More…
Diamonds from the Deep: How Do Diamonds Form in the Deep Earth? (英語)
Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.
Chart: Inclusions in Natural, Synthetic, and Treated Diamond
Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.
The History and Reconstruction of the Amber Room
Chronicles the history of this cultural landmark, originally assembled for the Prussian king between 1701 and 1714, and its reconstruction by the Soviet Union starting in 1979.
The Gemological Characteristics of Pipi Pearls Reportedly from Pinctada maculata
Reveals the internal features and spectroscopic data of these small natural pearls and offers the means of separating them from pearls of related mollusk species.
The Color Origin of Gem Diaspore: Correlation to Corundum
Examines the color origin of color-change diaspore, known commercially as Zultanite, and compare the effectiveness of the chromophores it shares in common with corundum.
Corundum with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam
Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.
Cat’s-Eye Brazilian Paraíba Tourmaline
Chatoyant vivid blue Brazilian tourmaline is examined in the Bangkok lab.
Freshwater Pearls, Blister and Loose, with Their Host Shells
Three freshwater pearls, two blister and one loose, were examined in the New York lab.
Gemological Analysis of Lightbox CVD-Grown “White” Diamonds (英語)
Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.
Large Pargasite Inclusion in Kashmir Sapphire
Unusually large prismatic pargasite inclusions observed in a Kashmir sapphire submitted to the Carlsbad lab for origin determination.
A Rare Ruby from Montana
An exceptional ruby specimen is identified with a Montana origin in the Carlsbad lab.
Gilson Cat’s-Eye Synthetic Emerald
In the early 1960s, French ceramist and engineer Pierre Gilson succeeded in growing and producing flux synthetic emerald of commercially marketable quality.
Rose in Demantoid from Madagascar
Garnets have been known since antiquity. However, it was only during the late nineteenth century that the green variety demantoid—named for its “diamond-like” luster—was discovered in the Ural Mountains of Russia.
Zircon Cluster in Ethiopian Sapphire
The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.