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(Supernova)
Presolar grains are tiny crystalline grains found in meteorites, such as the meteorite that created Meteor Crater in the desert of Arizona. These grains are assumed
to be older than the solar system. Scientist's calculations have shown that many of the presolar grains were
made by stars at or near the end of their lives. In particular, catastrophic
events such as supernova explosions and the dust from certain
red-giant stars, during their death throes, seem to have been major contributors
to the creation of presolar grains. system.
(Red Giant)
Micron sized silicon carbide grains were trapped in meteorites that were forming as our solar system was being shaped. The discovery of these refractory grains
has opened up a new branch of science and has also made a serious contribution to the world of precious gems and exquisite jewelry.
(Our Solar System)
Moissanite can be considered a presolar grain and, thanks to the scientists at Charles & Colvard, we can now own a Moissanite jewel that is identical, in every way, to the Moissanite stardust that was created so long ago.
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VERY IMPORTANT...
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All Moissanite stones are manufactured in the same Charles & Colvard laboratory and, contrary to some advertising I've seen on the internet, a jeweler cannot purchase either Moissanite rejects or Moissanite jewels that are said to be superior to other Moissanite stones.
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Moissanite is not separated into grades because Charles & Colvard has set specifications that each stone must meet before being released to distributors. Those specifications are comparable to diamonds which have been graded VSI (Very Slightly Included - Minor inclusions difficult to locate at 10x). Moissanite has no real inclusions...rather it has white, needle like structures which cannot be seen without 10x magnification and even then, they are very difficult to see. In addition, since Moissanite has no natural fractures, it is considered sturdier than diamond because it has no fractures that might crack if it is subjected to an impact of some kind.
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*Moissanite is lighter in weight than diamond. An 8 mm round diamond, which has been cut to diamond industry specifications, weighs approximately 2 carats. An 8 mm round Moissanite, identical to the diamond in every way, will weigh 1.63 carats. Both stones are identical in size and shape but the diamond will weigh more than the Moissanite. That is one of the reasons that Moissanite is described in millimeters most of the time.
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Also, Moissanite is very very hard -- second only to diamond. Sapphire, used in industry because of its hardness, is not as hard as Moissanite. This is the reason that Moissanite maintains its clarity and sparkle beyond a lifetime. The only other gemstone that can scratch Moissanite is another Moissanite or a diamond -- so the optical characteristics of Moissanite are comparable or superior to diamond (sparkles more).
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However, you need to know that Moissanite cannot compare in color to a colorless diamond. Completely colorless diamonds are very rare and very expensive. Moissanite's color can be found in the G through J diamond grading color scale. You will not find a D diamond color graded Moissanite stone.
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The only thing that can scratch a Moissanite is another Moissanite or a diamond. That is why your Moissanite jewel will look as beautiful 30 years from now as it did on the day you bought it!
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Resources
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