過去の書籍リスト: 古代インドのダイヤモンド
天然ダイヤモンドと 合成（ラボラトリーグロウン）ダイヤモンドで違いはあるのか
天然ダイヤモンドとラボで製造されたダイヤモンドの違いや類似点およびGIAの研究員やグレーディングラボがどのように区別するかについて学びます。
The Talisman of Charlemagne: New Historical and Gemological Discoveries
Reveals new details about this historical jewel and the results of its first gemological analysis.
Recycled Gemstones from Perpetuum Jewels
A wholesaler supplying the bridal market with recycled gemstones and antique cuts shares his thoughts on the market and on responsible practices.
CIBJO Blue Book and “Do’s and Don’ts” Guide on Responsible Sourcing
The World Jewellery Confederation (CIBJO) released the first edition of the Responsible Sourcing Book in January 2019.
Trapiche-Like Ruby from the Batakundi Mine, Kashmir
Trapiche-like ruby from Kashmir shows a well-formed fixed six-rayed pattern.
Appendix 1: Comparison of LA-ICP-MS and EPMA Data, Part 1
Appendix 3: Calculation Method for Tourmaline Species Classification Used Here
Appendix 2: Comparison of LA-ICP-MS and EPMA Data, Part 2
Native Copper Inclusions in Indonesian Purple Chalcedony
Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab.
CVD Layer Grown on Natural Diamond
A composite of synthetically grown and natural diamond was recently identified by the Carlsbad laboratory.
Diamonds from the Deep: How Old Are Diamonds? Are They Forever?
The age of something is fundamental. Humans, animals, wine, cars, and antiques are viewed and understood in the context of their age.
Trapiche Emerald from Colombia
The examination of a nearly complete trapiche emerald crystal–which are difficult to obtain–is consistent with the findings of previous studies.
“Rainbow Lattice” from Australia
One of the most striking materials encountered in the Riverpark Inn (Pueblo) Gem Show was “rainbow lattice.”
The Rock Hound: Muzo Emeralds and Ethical Practices
Susi Smither discusses her sustainable, responsible, and ethically based business practices.
Jeff Hapeman: Stories from a Gem Cutter
Jeff Hapeman of Earth’s Treasury (Westtown, Pennsylvania) loves a gemstone with a good story.
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