An overview of the 2016 gem shows.

A diamond’s inclusion, with a radiation stain shaped like a halo, is found to be monazite.

A look at the resumed operations and new production of Kenya’s Scorpion tsavorite mine.

A detailed characterization of serpentine from this mountain locality, focusing on its use as a gem material.

An unusual doublet consisting of two sections of natural emerald is examined the Tokyo lab.

Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.

A look at the gemological properties and chemical composition of this light blue to light green to green gem material, which is suitable for cabochon cutting.

A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.

A round-cut specimen set in a ring is the first mounted CVD synthetic melee diamond identified by GIA.

Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.

A report on the HPHT growth of large, gem-quality colorless synthetic diamonds in China.

阅读我们对有色宝石趋势、独特设计和行业预测的深度报道，加入宝石展览会的虚拟之旅。