Blue Sapphire gem is one of the most treasured and timeless of all gemstones. It carries a wide variety of color tones and shades. Top quality blue sapphire gemstones will have a brilliant, intense blue color, also called a cornflower or Kashmir blue sapphire. Like all sapphires, blue sapphire is a very durable precious stone and lacks any cleavage, which has made blue sapphire one of the most important precious gemstones for centuries. The most valuable gems come from Sri Lanka, Burma and Kashmir. While Kashmir production is almost non existent and the Burmese mining has considerably slowed down, most high quality sapphires now come from Ceylon. Madagascar and Australia are also important producers of sapphires. Inclusions and color zoning lower the price more than in fine rubies. Blue sapphires are also commonly heat treated to improve the color and clarity. For additional information about our single or calibrated stones, just contact us.