Final answer:
Yes, natural moissanite can be found in nature, although it is extremely rare. Most moissanite available in the market is synthetic.
Step-by-step explanation:
Yes, natural moissanite can be found in nature. Moissanite is a rare mineral that was first discovered in a meteorite crater in Arizona. It is composed of silicon carbide and has a similar chemical composition to diamonds, but with different atomic arrangements. Natural moissanite is extremely rare and most of the moissanite available in the market today is synthetic, meaning it is made in a lab.