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Faceted blue zircons
Reversible Colour Modification of Blue Zircon by Long-Wave Ultraviolet Radiation

Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original colour through the use of incandescent light.

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The superior size and color of the 325.13 ct. tsavorite garnet from Merelani was discovered at the Tucson Gem & Mineral show in 2007. Courtesy of Michael Couch & Associates, West Des Moines, Iowa; photo by Robert Weldon © GIA
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The Glory of Green Gems

Green gemstones, which can uplift and heal our spirits, have been popular gem choices ever since we began to adorn ourselves with jewellery.

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