Gem-Quality Yellow-Green Haüyne from Oldoinyo Lengai Volcano, Northern Tanzania
Yellow-green to green-yellow gem-quality haüyne was found for the first time in an alkaline plutonic rock.
Characterization of “Green Amber” With Infrared and Nuclear Magnetic Resonance Spectroscopy
A peridot-like bright greenish yellow to green gem material called “green amber” has recently appeared in the gem market.
Aquamarine from the Masino-Bregaglia Massif, Central Alps, Italy
Aquamarine from granitic pegmatites of the Masino-Bregaglia Massif, Central Alps, Italy.
Spectral Differentiation Between Copper and Iron Colorants in Gem Tourmalines
The authors used Vis-NIR spectral measurements combined with LA-ICP-MS data to investigate the usefulness of absorption spectra.
Celebrating 75 Years of Gems & Gemology
Gems & Gemology, the professional quarterly of GIA, debuted in 1934.
铜扩散进入碧玺的可能性:初步实验准备工作

使用 LA-ICP-MS(激光剥蚀电感耦合等离子体质谱仪)鉴定自然色的铬玉髓
一篇关于使用微量元素 LA-ICP-MS(激光剥蚀电感耦合等离子体质谱仪)分析以确定铬玉髓的着色剂(天然或人工)的报告。
提升你职业生涯的 10 大技巧
在拉斯维加斯举办的 GIA 2009 年小型珠宝招聘会上,Honora 的 CEO Joel Schechter 与我们分享了他父亲 Stanley Schechter 教他选拔模范雇员身上要具备的重要特质 — 忠诚、诚实,尊重他人和关注细节 。
The “Type” Classification System of Diamonds and Its Importance in Gemology
Knowledge of type allows gemologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.

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