![]() ![]() In the gemstone trade, these are also referred to as ""Linde,"" pronounced ""Lin-dee. It is a very desirable gemstone due to its excellent color, hardness, durability, and luster. The gray, blue-gray, and white ""star"" sapphires frequently show a more distinct star. Sapphire is the most precious and valuable blue gemstone. Blue sapphire can range in colour from very pale to very dark blue and it occurs when the sapphire crystals contain small amounts of iron and/or titanium, which. These special stones possess the deep blue color of the finest sapphire. The star sapphire reflects light, showing a glittering star with six points. ![]() Although blue is the best-known sapphire color, they occur in other colors, including gray and black, and also can be colorless. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Refreshment, in the form of an unheated gemstone that falls in the upper register of the Blue Sapphire color spectrum. Like rubies, sapphires can come with a natural six rayed star inside, which is called the ""star sapphire"" and is extremely rare. An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. ![]() The most desirable color sapphire is blue, and the most desirable shade of blue is referred to as "cornflower blue."" It is neither light nor dark blue. 2 Durable It’s so durable, synthetic sapphire is used for the windows of supermarket scanners and spacecraft. Heat treatments have become common in recent years, as a way of improving color as the beauty of a sapphire is judged by the richness and intensity of its color. Sapphire’s blue can be vivid and saturated, like it’s lit from within. This Sapphire gemstone guide lists qualities of the Sapphire gem type, including stone colors, common names, meanings, gemstone hardness and more. Blue Sapphires Color has the greatest influence on a sapphire’s value, and preferred sapphires have strong to vivid color saturation. The color of a sapphire is created by various amounts of iron and titanium in the stone, the combination of which produce varying colors. Fine sapphires are most available under two carats, but they can also be found in sizes from five to ten carats. ![]()
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