White Gold Moissanite Solitaire Engagement Rings For WomenUS Shipping 4 13 Days Use a ring sizing chart prior to purchase! Confirm Ring Size. Double Check Ring Size. Then Purchase. No longer accepting returns for incorrect ring size! What is Moissanite? Moissanite is a rare, naturally occurring mineral also known as silicon carbide, which was first discovered by the Nobel Prize winning chemist, Dr. Henri Moissan, at the site of a massive meteorite strike in Arizona. This intriguing new stone was named