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Jade

1 January 2000
Richard W. Hughes, Olivier Galibert, George Bosshart, Fred Ward, Thet Oo, Mark Smith, Tay Thye Sun & George Harlow

Myanmar's jadeite mines occupy a privileged place, representing the planet's principal source of fine jadeite jade. This article covers the deposits themselves, along with the cutting, grading and trading of jadeite.

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1 October 1998
Richard W. Hughes

The Opticon treatment of fissure-filling treatment emeralds with Opticon became an issue of huge controversy in the late 1990's. This article takes a close look at it and asks if Opticon is actually that different from fillers like cedarwood oil.

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