Moissanite is a diamond simulant made of silicon carbide. A diamond simulant is a stone that has a similar appearance to a diamond, but is not a real diamond. ... Moissanite was originally discovered in a meteor crater in 1893 by scientist Henri Moissan. He mistakenly believed the crystals he found were diamonds.

Is moissanite worth buying?

Moissanite is a much safer stone to invest in though. It's both less expensive to buy and tends to require less significant discounting to resell. It's also an incredibly hard stone (second only to diamond on the Mohs Scale of Hardness) that looks almost identical to diamond.

Which is more expensive diamond or moissanite?

Price. Perhaps the biggest advantage of moissanite over diamonds is the price, for moissanite is considerably cheaper than a diamond. “A moissanite gem is approximately one-tenth the cost of a mined diamond of equal size and quality,” O'Connell says. “The value of moissanite is greater with larger carat weights.”