by Richard Hughes

The story of Richard Hughes' four-decade adventure with jade, from Burma's jadeite mines to China's classic mutton-fat nephrite mines at Hetian, Xinjiang Province. The work of China's modern jade carving masters is also discussed.

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by Richard W. Hughes, E. Billie Hughes & Wimon Manorotkul
Black Star Sapphire Surprise

A large black star sapphire was brought in for testing. Two large pits on the base were carefully filled with brown dopping varnish. After removal of the varnish with alcohol, it was found that a large portion of the base had been filled with a lead glass.

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by E. Billie Hughes
Long-Wave Ultraviolet Torches: A Gemologist’s New Best Friend

This article discusses the use of handheld long-wave ultraviolet torches with the microscope. It has been found that these have tremendous utility in identifying and characterizing certain oiled gemstones, such as emerald, tourmaline, etc.

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by E. Billie Hughes
Gems & Gemology Lectures

Lotus Gemology's gemologists have lectured extensively about a wide variety of gemological topics including ruby, sapphire, jade, and more.

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by Richard W. Hughes & Wimon Manorotkul
FTIR in Gem Testing • A Pink Sapphire Lesson

A discussion of DRIFTS vs the Beam Condenser FTIR attachment in the testing of pink sapphire. The DRIFTS accessory is generally much better at unmasking heat treatment in ruby and sapphire.

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by Richard W. Hughes, Auslan Ishmael, Flavie Isatelle & Peter Wang
Laos Sapphires • Laos – Land of a Million Elephants... & Sapphires

The history of the Lao sapphire mines at Ban Huay Xai is detailed, along with modern mining by Hong Kong based Sino Resources Mining Corp. Ltd. from 2006–2012.

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by E. Billie Hughes
Six-Rayed Star in Sapphire from Myanmar

A Burmese sapphire shows a celestial scene both externally and internally.

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by E. Billie Hughes
Mogok Ruby With Remarkable Twinned Calcite Inclusion

An included calcite crystal within an unheated Burmese ruby displays dramatic twinning planes.

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by E. Billie Hughes
Sapphire With Growth Tube Cluster • Sapphire Inclusions

Surface-reaching growth tubes in a sapphire provide insight into the gem’s origin and treatment history.

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by E. Billie Hughes
Oiled Ruby: A Remarkable Visual • Ruby Inclusions

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

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