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Sapphires can be found naturally in certain sediments, due to their resistance to being eroded compared to softer materials, or rock formations, or they can be manufactured for industrial or decorative purposes. The remarkable hardness of sapphires, and of aluminum oxide in general, sapphires are used in some industrial applications, including infrared optical components, such as in scientific instruments, high-durability windows and used in scientific instruments, wristwatch crystals and movement bearing. Sapphires can be in very thin electronic wafers, which are used as the insulating substrates of very special-purpose solid-state electronics such as integrated circuits. Sapphires sale, sapphire online, sapphire gemstone, blue sapphire, pink-orange sapphire, sapphire on sale, sapphires online, overstock sapphire, sapphire for sale
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