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Clear Gems Information
Clear Gems TipsA synthetic diamond should not be confused with stimulant diamonds, such as glass, cubic zirconia, or moissanite. A synthetic diamond is basically a rock that has the durability, refractive index and hardness of a natural diamond – but it is made by man. The first synthetic diamonds were produced by General Electric in 1954. Another huge mineral in the exhibit is the Smithsonite, named for James Smithson, who bequeathed the funds to establish the Smithsonian Institution. He first discovered this greenish zinc carbonate mineral from the Kelly Mine in New Mexico. Clear Gems AdvicePearls can eventually disintegrate, even if all you do is wipe dust off them. Most gems are hard and durable, although pearls can be easily damaged, as can opals and moonstones. Usually a gemstone has to be durable enough to wear as adornment, but others, while too soft to wear, are valued by collectors. And if you spray hairspray or perfume on them, this can also damage your pearls. Temperature changes in the upper mantle forces the carbon atoms to go deeper where it melts and finally becomes new rock, when the temperature reduces. Diamonds form between 75-120 miles below the earth's surface. The carbon that makes diamonds comes from the melting of pre-existing rocks in the Earth's upper mantle. According to geologists the first delivery of diamonds was somewhere around 2,5 billion years ago and the most recent was 45 million years ago. There is an abundance of carbon atoms in the mantle. If other conditions like pressure and chemistry is right then the carbon atoms in the melting crystal rock bond to build diamond crystals. Clear Gems Facts
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