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муассанит (Naturally-occurring silicon carbide, having various crystalline polymorphs.Moissanite is regarded as a diamond alternative,  wikipedia.org GeOdzzzz) | |||
| Англійський тезаурус | |||
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| A man-made gemstone that closely resembles a diamond. It is only slightly less hard and can mimic almost all of the diamond's other qualities. | |||