What Is A Star Sapphire Stone

Rarely when sapphires are cut in cabochon they can demonstrate a cat s eye effect.

What is a star sapphire stone. The ideal star sapphire would be entirely transparent but the rutile silk that causes the star phenomenon ensures that every star sapphire is to some degree included. This effect displays a thin band of light down the centre of the stone and is known as chatoyancy. Fine colored sapphire with a deep blue color and excellent transparency can reach several thousand dollars a carat the blue variety is most often used in jewelry but the yellow pink and orange fancies have recently become very popular. Sapphire is a precious gemstone a variety of the mineral corundum consisting of aluminum oxide α al 2 o 3 with trace amounts of elements such as iron titanium chromium vanadium or magnesium it is typically blue but natural fancy sapphires also occur in yellow purple orange and green colors.

Star sapphire value see our article called phenomenal gems to read more about the grading and valuation of stones with asterism. Blue star sapphire ceylon good star si vvs type ii 1 000 to 3 000 per carat. The size color and clarity of the stone are of course just as important as they are with other stones. The star sapphire gemstone is one of the most popular gemstones in the world and much sought after by collectors and jewelry lovers.

Sapphire is one of the most popular gemstones and is used extensively in jewelry. Sapphires are one of the few gemstones that produce a star shape of four to six light reflecting rays across the center of a cut stone. Star sapphire is rare variety of sapphire that exhibits a rare asterism under specific lighting. Star sapphires usually have six ray stars but twelve ray stars are also known.

Parti sapphires show two or more colors. When viewing star sapphire a six rayed star will appear to float across the surface of the stone. Just like any kind of gem the quality of a star sapphire varies depending upon a number of factors. Fine star sapphires must have enough silk for a bright well defined star without compromising the stone s transparency.

Very typical of the star sapphire is the optical effect of asterism. Works as a relaxing agent during times of extreme physical exertion. The international gem society igs has a list of businesses offering gemstone appraisal services. Together with the diamond ruby and emerald it is one of the most popular stones in the world.