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。

无论您是开始新的职业生涯或是职业旅程迈出下一步，GIA 教育都被视为宝石和珠宝行业培训与职业发展的巅峰。我们教授最新的研究成果、技术和经过时间考验的技能，同时我们向学生灌输专业诚信的重要性。作为全球推崇的真正标志，GIA 证书是知识和信任的象征。 

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Synthetic overgrowth caused by two different types of treatment are found on two samples in the Tokyo lab.

A report from the 37th IGC, held in late October 2023 in Tokyo.

Large blue and pink diamonds were among the top lots of the fall auction season, including the most expensive auction jewel of 2023.

An unusual mite is preserved in a 30-million-year old amber specimen.

Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.

“Rainbow” andradite from Nara, Japan, occurs as relatively small orangy brown crystals that show attractive iridescence in almost the entire range of the spectrum.

The gem and jewelry industry mourns the loss of one of its true leaders.

Two flame-fusion synthetic sapphires with a Paraíba-like color are examined at GIA’s Carlsbad lab.

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。

碧玺的化学成分非常复杂，该类矿物中已识别出十几种不同的矿物种类。

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。