People in the trade refer to corundum in its purest form as either a colorless sapphire or white sapphire. The closer corundum comes to having no color, the more valuable it is as a colorless sapphire. Traces of extremely light gray, yellow, brown, and blue are common, and reduce the value. Colorless sapphires have been popular as small accent stones in jewelry, and they are commonly used as a natural substitute for diamonds.
The best colorless stones are from Sri Lanka, and purchasing from Crescent Gems gives you the best value for your stones as they come directly from the source.
: The traditional heating of sapphires is a widely used and accepted enhancement process which can improve the transparency and color of the stones. Techniques range from simply throwing gems into a fire to be cooked to employing sophisticated electric or gas furnaces at specific pressures and atmospheric conditions. The treatment is permanent and heated stones do not require any special care.
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