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GEOLOGY 115. OPTICAL PROPERITES OF GEMS. Optical properties are those which are related to the behavior of light, on, or in, a gemstone. Some of these can be seen, and even quantified, with the naked eye alone. Three such characteristics are: luster, transparency, and color. The study

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GEOLOGY 115. OPTICAL PROPERITES OF GEMS. Optical properties are those which are related to the behavior of light, on, or in, a gemstone. Some of these can be seen, and even quantified, with the naked eye alone. Three such characteristics are: luster, transparency, and color. The study

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Diamond - Wikipedia

Diamond is a solid form of carbon with a diamond cubic crystal structure.At room temperature and pressure it is metastable and graphite is the stable form, but diamond almost never converts to graphite.

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From 2000BC to 1000BC] [You are now on a page filed as: Timelines - From 10,000BC to 2000BC] [Next page From 20,000BC to 10,000BC]

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