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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.

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Summer 1990 Gem News International

June 1, 1990

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.

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The internal structures of natural pearls from the marine mollusk Pinctada maxima are the subject of the lead article in this issue. The scattered loose pearls on the cover are from Paspaley’s natural pearl collection, which includes one discovered in the 1970s at the Eighty Mile Beach fishing grounds
G&G Spring 2021 Edition
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