The reason for this is that the elemental bonds that exist between carbon and silicon are very similar to the carbon-carbon bonds of other elemental minerals such as diamond. Moissanite in fact is sometimes placed into the Carbon Group which includes diamond and graphite . Additional justification lies in the structure of moissanite which is similar to the structure of diamond. Color is green. Luster is adamantine.
Crystals are transparent to translucent.
Crystal System is hexagonal, trigonal and isometric. Crystal Habits include tiny six-sided plates and grains in meteorites. Streak is white. Associated Minerals include iron meteorites and olivine . Notable Occurrences include Diablo Canyon or Meteor Crater in Arizona and as a trace in several kimberlite deposits and placer deposits eroded from them.