用显微镜评估视觉识别的高温高压处理钻石，观察刻面交接处强烈的荧光。

探究硬玉和绿辉石的区别，以及美国宝石研究院关于这些宝石定义的现行政策。

GIA 接收的待鉴别物品种类繁多、错综复杂；从各种有色宝石、珍珠、非比寻常的雕刻品和珠宝，到最新的合成品和仿品以及经过加工的宝石，应有尽有。

Examination of a green-blue apatite reveals goethite in a surface-reaching fracture.

Microscopic examination of quartz reveals well-formed blue hexagonal prismatic crystals exhibiting moderate pleochroism.

A diamond’s cloud and crystal inclusions create a unique scene.

Patterns observed in a color-treated purple diamond reveal details about its growth history.

An imitation is identified in a parcel of non-nacreous pearls submitted to the Mumbai laboratory.

A common opal from Ethiopia examined in the New York laboratory bears a striking resemblance to a bar of chocolate.

An unusually high abundance of magnetite in four distinctive crystal habits is observed in a Zambian emerald.

GIA 知识交流研讨会是一系列演讲和研讨会，与参与者共同探讨当今宝石学面临的各种最为紧迫的问题，包括宝石原产地、实验室培育宝石和实地宝石学的新发现。

爱德华·古柏林博士收集的藏品中，有许多来自世界各地不常见的宝石。

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Edward Gübelin（爱德华·古北林）博士收集的藏品中，有许多来自世界各地的罕见宝石。