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The Foxfire Diamond, Revisited

James E. Butler, Jeffrey E. Post, and Wuyi Wang, January 26, 2018

The 187.63 ct rough diamond from Canada’s Diavik mine shows surprising reactions to ultraviolet light.

DiamondView images show the fluorescence in two unusual diamonds.

Two Natural Type IIa Diamonds with Strong Phosphorescence and Ni-Related Defects

Shi Tang, Zhonghua Song, Taijin Lu, Jun Su, and Yongwang Ma, January 26, 2018

Natural diamonds exhibit characteristics normally seen in synthetic material.

Garnet Crystal Inclusion Photomicrograph

Colour-Change Garnet in Diamond

Meenakshi Chauhan, October 31, 2014

This diamond contained an inclusion of pyrope-spessartine garnet that appeared greyish green in fluorescent light and purplish red in incandescent light.

Unusual Dumbbell-Like Inclusion in Diamond

Emmanuel Fritsch and Aurélien Delaunay

Examination of a 0.40 ct near-colourless round brilliant diamond with a large inclusion resembling a dumbbell

Interesting Growth Structure in Black Diamond

Yujie Li, Hui Xu, Taijin Lu, Zhikun Hu, and Xinming Wang, January 26, 2018

Observations on a black diamond with an unusual inclusion pattern lead to theories on growth.

Bright yellow diamonds from Sierra Leone

James Shigley and Christopher M. Breeding, January 31, 2014

Examination of strongly yellow diamonds from the Zimmi area of Sierra Leone revealed graphitised feather inclusions.

$Walstromite inclusion with fan-shaped black fractures.$

D-Colour Natural IIa Diamond with Walstromite Inclusion

Ying Ma, Huihuang Li, Xiaoxia Zhu, Ting Ding, Taijin Lu, and Zhili Qiu, August 9, 2018

A diamond is proven to have a superdeep origin through an inclusion of CaSiO₃-walstromite.

Fancy Dark red mixed type synthetic diamond.

Mixed-Type Treated Red HPHT Synthetic Diamond

Meili Wang, Guanghai Shi, and Joe C.C. Yuan, May 8, 2017

A fancy-colour treated synthetic specimen is revealed to be IaA + IaB + Ib types.

Large Colourless HPHT Synthetic Gem Diamonds from China

Wuyi Wang and Thomas Moses, April 28, 2016

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

Online Diamond Sales 17% of U.S. Market

Russell Shor, January 30, 2015

According to a recent De Beers study, online sales of diamond jewellery comprise about 17% of the market in the U.S.

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