Many of these sapphires have been recut in the USA to American standards and cannot be compared to native cut gems. Many of our blue sapphire gems are accompanied by a third party certificate and appraisal. Blue sapphires are commonly heat treated to improve color and clarity, but treated stones do not command the prices that a fine, vivid blue natural color gem does. Flaws diminish the price more so than in fine rubies. Besides color, evenness and uniformity of color, or lack of zoning, is very important. Other important high quality sources recently discovered are from Madagascar. Kashmir production is almost nonexistent.
The most valuable gems come from Sri Lanka, Burma and Kashmir. Shop for the Best Heated and Unheated Sapphire Gemstones in Free and Standard Sizes - Best Sapphire Birthstone Gifts Like all sapphires, blue sapphire is very durable and lacks any cleavage, which has made blue sapphire one of the most important precious gemstones for centuries. Like our other loose gemstone collections, we select our blue sapphires for color, clarity and price. We have an unusually large selection of fine quality unheated blue sapphire at very attractive prices. Loose, high quality faceted blue sapphire gemstones have always been an AfricaGems trademark, we have more than 300 individual blue sapphires available to you immediately. Fine quality blue sapphire gemstones must have a vivid, intense blue color, sometimes called a "cornflower blue sapphire".
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