What is Luster? | Definition, Types & Examples
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Corundum var. Sapphire - Mogok Valley, Pyin-Oo-Lwin Dist., Mandalay Region, Myanmar (Burma) More info: https://www.irocks.com/minerals/specimen/53044 A classic and well formed, textbook crystal of natural blue sapphire from the famous gem deposits of Mogok in Myanmar (Burma). This is not gemmy (or the price could have 2 more zeroes on it and most of us would not want that, so it would be cut!!) but it is translucent when backlit and it has a very pleasing pastel color combined with a natural wax
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Corundum var. Ruby - Mogok Valley, Pyin-Oo-Lwin Dist., Mandalay Region, Myanmar More info: https://www.irocks.com/minerals/specimen/52293 Rubies from Mogok set the global standard in the colored gemstone industry, for both collectors and investors in gemstones. Mineral collectors feel the same way. When they are good, they are REALLY good. This adorable gem crystal is a classic Mogok ruby with rich color, waxy luster, and a brilliance to it that is hard to describe in some way. It is from the lo
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Corundum var. Sapphire - Ratnapura, Sabaragamuwa Prov., Sri Lanka More info: https://www.irocks.com/minerals/specimen/51786 This is a remarkable corundum variety sapphire crystal for the fact that it does not have color. Sri Lanka is famous for sapphires, but most are found in shades of pale blue to gray, and treated to become hot blue colors, and later sold for more value even if heated. While we often see gray to pale blue crystals for sale, and those often with poor luster, this is something
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