Moissanite:
Moissanite /ˈmɔɪsənaɪt/, a form of silicon carbide, is a rare mineral discovered by Henri Moissan,and having the chemical formula SiC, and to various crystalline polymorphs.
en.wikipedia.org
莫桑石:
莫桑石（俗稱摩星石），成份從隕石提煉出來，為碳矽結合的分子，可以為人工製造，属于超硬材料，硬度為9.5。
zh.wikipedia.org
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Moissanite莫桑石