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Sapphire
The name “sapphire” can also apply to any corundum that’s not ruby red, another corundum variety.
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Sapphires from Thammannawa, Kataragama Area, Sri Lanka
The February 2012 discovery of high-quality blue sapphires at Thammannawa near Kataragama in southeastern Sri Lanka has intensified gem mining and exploration in the surrounding area and all over the country.
The Seven Types of Yellow Sapphire and Their Stability to Light
Land of Origins: A Gemological Expedition to Ethiopia
Documents a visit to the sapphire, opal, and emerald mining and trading areas of Ethiopia.
Preview of Nature Art Science with Paula Crevoshay
Unheated and Unusual Colors
Jewelry Television in Tucson
Rare Emerald from China and Pink Sapphire from Sri Lanka
Gems Keep Giving
Tairus Hydrothermal Synthetic Sapphires Doped with Nickel and Chromium
Zircon Cluster in Ethiopian Sapphire
The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.
Update on Ametrine from the Yuruty Mine, Bolivia
