Sapphire - Wikipedia, the free encyclopedia
Sapphire (Greek: ) refers to gem varieties of the mineral corundum, an aluminium oxide (α-Al 2 O 3 ), when it is a color other than red, in which case the gem would instead be a ruby. Trace amoun...
en.wikipedia.org/wiki/Sapphire
It is very difficult to scratch a sapphire, which is harder than any other gem ( 9 on the Mohs scale) except a diamond. Synthetic sapphire is used for scratch-resistant instruments, optical scanners, watch crystals, etc, because of its durability.
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Sapphire is used as a window for high temperature applications (like if you need to see inside a high temperature furnace). It is also used for high precision optics and optics for harsh environmental conditions;
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Because of its remarkable hardness, sapphire is used in many applications, including infrared optical components, watch crystals, high-durability windows, and wafers for the deposition of semiconductors, such as GaN nanorods and blue LEDs.
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Sapphire comes in every color except red (ruby). Blue is the most common color for sapphire. White sapphire is occassionally used as a diamond substitute. Sapphire engagement rings are given to express the commitment and loyalty of their heart.
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SARO-Gem Jewellery Watch Co., Bettlach, Switzerland, has found a new use for synthetic sapphire in watches. SARO, which stands for Sapphire Round Over, uses synthetic colorless sapphire not only as the crystal over the dial but also as an overlay on the bracelet itself, making the entire watch scratch resistant.
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Sapphire Used on Watch Bracelets.(SARO-Gem Jewellery Watch Co. uses synthetic sapphire in watches) from Jewelers Circular Keystone provided by Find Articles at BNET ... SARO-Gem Jewellery Watch Co., Bettlach, Switzerland, has found a new use for synthetic sapphire in watches. SARO, which stands for Sapphire Round Over,
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