2013 年 7 月，GIA 的 Shane McClure、Duncan Pay 和 Robert Weldon 与摄影师 Kevin Schumacher 一同前往美国俄勒冈州偏远的东南角，参观该地区三处太阳石矿场。

2013 年 7 月探索俄勒冈州Ponderosa（庞德洛萨）矿场宝石报告三部曲的第一部分。Ponderosa（庞德洛萨）矿场是一处处于黄松环抱之中的日光石产地，景色壮丽。

“奥德赛日光石”系列的最后一部分介绍了 Sunstone Butte 矿（拥有大量壮观的绿色和双色宝石的新场址）。

我们光顾 Dust Devil 矿区继续我们的“日光石奇幻历险”系列之旅，许多获誉良多的刻面宝石和雕刻品均产于此地。

Shows the conversion of limonitic residues to hematite in surface-reaching inclusions, a practical indication of heat-treated corundum.

The uncommon occurrence of epigenetic malachite, as found in this quartz, can result in vivid green color.

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.

Examination of an imitation rainbow moonstone assemblage containing plastic-coated gypsum.

An unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.

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.

Natural amber beads were found to have been filled with plastic and a variety of insects.

An unusual laser manufacturing remnant, possibly once used to guide a gem cutter, was left behind in a clock-like shape.

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.

Chronicles a visit to the high desert of eastern Oregon to examine commercial sources of this natural copper-bearing feldspar.

研究宝石学家 H. “Gio” Giovanni（H.·吉奥·吉奥瓦尼）与 GIA 卡尔斯巴德学生分享了他的创新珠宝设计技能和品牌实践。

在 GIA 卡尔斯巴德校区的演示会期间，毕业生为在校学生提供职业发展建议。