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Spring 2000 Gem News International

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

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Sixteen samples of facet-quality ruby
Preliminary Observations on Facet-Grade Ruby from Longido, Tanzania

Microscopic observation and trace element analysis is performed on rubies from Longido.

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Suggested Reading on Rubies and Their Inclusions

Suggested Reading on Rubies and Their Inclusions

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A round, bright red gem displayed on a dark gray background.
Article
The Red Hot Gems of Summer

These red, pink and orange hued gems evoke passion and excitement – and are surefire accessories for sultry summer days.

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Cambodian-Thai Ruby
Article
A Study of Rubies from Cambodia and Thailand

A report from the GIA Laboratory in Bangkok analyzing 41 Cambodian-Thai rubies.

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Oil in ruby contrasts with gem’s bodycolor.
Oiled Ruby: A Remarkable Visual

A ruby’s surface-reaching cavity is filled with red oil.

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Article
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

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Zambia’s Kagem emerald mine.
Conversation with Gemfields

An exclusive interview with Ian Harebottle, CEO of Gemfields.

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Washing process at Mustang.
New Ruby Miner in Mozambique

A new mining operation in Montepuez is profiled.

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Beryllium Diffusion of Ruby and Sapphire

The heat treatment of corundum involving lattice diffusion of beryllium (Be) at temperatures over 1800°C has become a major issue in the gem trade.

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