We have #Moissanite crystals that formed in other stars! Dissolve some meteorites almost completely, and some of the residue is SiC -these grains have carbon and silicon isotopes produced in red giant stars and supernova; from before our solar system formed. See Larry Nittler's (now at Arizona State University #ASU) presentation:
https://www.oca.eu/images/LAGRANGE/EcolesThematiques/Houches_2017/pdf/5a_Presolar_grains_Nittler.pdf
#MinCup23 #Cosmochemistry #Stardust