moissanite
/ˈmwasənaɪt/ /ˈmɔɪsənʌɪt/Mineralogy
noun
Trigonal silicon carbide, SiC, which occurs as colourless to blue or green hexagonal plates with a metallic lustre and is the naturally occurring form of carborundum.
Origin
Early 20th century. From the name of Henri Moissan, French chemist, who discovered the mineral + -ite.