Star Saphire

Posted by admin on November 11, 2009

A sapphire that exhibits a star like light imagewhen viewed with a single overhead light lamp is call a star Sapphire. Star saphire contain obliquitous needle like inclusion that cause the facade of the six rays, star shaped pattern. The merit of a star saphire is conditional upon the intensity of the star form in addition to the standard 4Cs grading system.

Star saphire are dissimilar to your ordinary sapphire because they don’t seem to be faceted. Angles are the planes that you see in diamonds and sapphires, rubies and emeralds as well as many other stones. But star saphire are cut into cabochons. A cabochon is the all-around or domed smooth cut. It comes from an old French word with means hat. In traditional era star saphire were especially highly regarded as the star apparently would help travelers by being a guiding star.

Burma and Sri Lanka are the most important Sample sources for star ruby and star saphire, though Thailand is renowned for the black and gold star saphire found only in Chanthaburi province. Some star saphire are turned out using a diffusion settle, where the star saphire is warmup with a coating of titanium dioxide which diffuses into the corundum and creates rutile needles.

Synthetic star saphire were first turned out in the latter 1940’s by Linde, a branch of Union Carbide. They are Currently produced in Japan by Nakazumi Earth Crystals. The man-made gems have a tendency to have ideal color and star so vivid and straight that it would seem painted on the star saphire stone.

Star saphire are rare but because the stones are heat treated after mining and then cut with sides so the stars are never viewed again. Today they are rare and well cherished and they make superb jewelry. A star saphire ring is very engaging and is a good talking point as people are always prepared to have a look at something else.

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