by Richard W. Hughes
Ruby, Sapphire & Spinel Auction Records • Under the Hammer • Lotus Gemology

World auction records for ruby, sapphire and spinel.

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by Wilawan Atichat & Richard W. Hughes
Rock talk  |  A Mogok Geology Primer

A look at the geology of Myanmar's Mogok Stone Tract, home to pigeon's blood rubies and so much more…

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by E. Billie Hughes

An account of a 2013 visit to Mogok – Myanmar's fairy-tale wonderland.

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by Richard W. Hughes & Vincent Pardieu, with Michael Rogers, Olivier Segura and Philippe Ressigeac
Red Sky at Dusk  |  Hunting the Last Siamese Ruby Miner

In search of Thailand's last ruby miner.

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by Richard W. Hughes & John L. Emmett
Heat Seeker  |  UV Fluorescence as a Gemological Tool

One of the greatest gemological challenges is determining if a ruby or sapphire has been heat treated. UV fluorescence can assist in that identification, as well as detecting fillers in emerald.

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by Vincent Pardieu, with Richard W. Hughes & Edward Boehm
Burmese spinel

Since the turn of the millennium, the price of fine spinel has risen at an incredible pace. No longer simply the poor man's ruby, spinel is finally getting the attention it deserves as one of the world's premier gems.

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by Richard W. Hughes with E. Billie Hughes, Wimon Manorotkul & Dana Schorr
In Search of the Lost Andesine Mines  •  Part II  •  Faith

The mining of natural red andesine in Tibet has been a subject of controversy. This article describes RWH's second visit to the Tibetan deposit.

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by Richard W. Hughes with Ahmadjan Abduriyim, Flavie Isatelle, Christina Iu, Brendan Laurs, Thanong Leelawatanasuk, Li Tong, Lou Li Ping and Young Sze Man
In Search of the Lost Andesine Mines  |  Part I  •  Hunting Barack Osama in Tibet

The subject of andesine in Tibet has been one of controversy since 2008. This article examines the history of the issue, along with detailing an October 2010 visit to the Tibetan andesine deposit.

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by Richard W. Hughes & John L. Emmett
Fracture Healing of Ruby • Fluxed Up

A discussion of the flux-healing treatment of rubies. This article was given the Richard T. Liddicoat Journalism Award by the American Gem Society in 2005.

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by John L. Emmett & Richard W. Hughes
Trust  •  The Ethics of Gem Treatment Disclosure

The ethics of gem enhancement disclosure.

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