![]() Its red and blue varieties are well-known as ruby and sapphire. Sapphires are well known among the general public as being blue, but can be nearly any color. SAPPHIRE/RUBY CORUNDUM Violet Colour Hues Large 12.92Ct MF3295 GEMSTONE : SAPPHIRE CORUNDUM WEIGHT : 12.92Ct SIZE : 13.5 x 11.8 x 6. Corundum is a rock-forming mineral composed of aluminum oxide. The non-red variety of corundum is Sapphire. Rubies and sapphires are the same mineral: corundum, with different trace minerals creating a wide variety of color. The word "corundum" derives from the Tamil word "Kurundam" which originally comes from the Sanskrit word "Kuruvinda" meaning ruby. Our selection of dyed corundum has the appearance of popular and desirable statement jewels, and is our way of bringing you a big look at a very affordable price. Heat treatment can improve colour and transparency at temperatures ranging from about 800 to 1900☌. While you'll be pleased to find a plethora of fine ruby jewelry and sapphire jewelry within the Ross-Simons collection, you will also be delighted to discover beautiful and affordable dyed corundum jewelry pieces, as well. ![]() Additionally, naturally colorless or pale-colored corundum is sometimes dyed to achieve vibrant and desirable colors. This process gives the gemstone's color a more enhanced appearance by exposing it to very high heated temperatures. Natural rubies and sapphires may have their color deepened through the process of heat treatment. ![]() This quality could certainly contribute to its popularity in the world of jewelry, as the hardness of the gemstone lends itself to use in a variety of interesting and beautiful fine jewelry styles and settings. Corundum is a relatively hard mineral, coming in at a nine on the Mohs gemstone hardness scale.
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