Moissanite FAQ

Moissanite History & Facts
What Are Moissanites

Moissanites are a type of gemstone that are made of silicon carbide (SiC) and are similar in appearance to diamonds. They were first discovered in a meteor crater in Arizona by French scientist Henri Moissan in 1893, and are named after him.

Moissanites are naturally occurring, but are extremely rare, so most are now created in a lab. They are known for their exceptional brilliance and fire, which is why they are often used as an affordable alternative to diamonds in jewelry. Moissanites are also harder than many other gemstones, making them durable and resistant to scratching and chipping. 

Why are Moissanites sold by millimeter rather than carats?
Moissanites are sold by millimeter rather than carats because the density of Moissanite is different from that of diamond, so a 6.5mm Moissanite will have a different weight than a 6.5mm diamond. The carat weight is dependent on the density of the stone. Because Moissanite is significantly less dense than diamond, a 6.5mm Moissanite will weigh less than a 6.5mm diamond. Carat weight is a standard unit of measurement for diamonds, but not for Moissanite. Additionally, the millimeter measurement is more accurate, as it directly measures the size of the gemstone, rather than estimating the weight. As a result, sellers of Moissanite use millimeters as a more precise measurement for size and weight.
Is Moissanite a brand of diamond or simulated diamond?
Moissanite is not a brand of diamond, it is a naturally occurring mineral also known as silicon carbide (SiC). It is not a diamond, but it's an alternative to diamond that is created in a lab, unlike diamond that is mined from the earth. Moissanite is known for its brilliance and fire, and is often used as a diamond simulant in jewelry because it has similar properties to diamond in terms of its appearance and durability, but is significantly more affordable. Some people choose moissanite as an alternative option to diamond due to its ethical and environmental impact. Moissanite is also eco-friendly and lab-created, which is a more sustainable option.
Are Moissanites certified? (GRA certificate)
There is no official certification for Moissanite. GRA certified Moissanites are not inspected by any gemstone laboratory, and the certificates that come with them are pre-printed and not based on any inspection of the stone. Many vendors use GRA certification to mimic diamond grading and certification, but it's important to understand that these certificates are not accurate and do not reflect the true quality of the Moissanite. If you want to get your Moissanite graded and certified, it's best to send it to a reputable gemstone laboratory such as IGI or GIA.
Oops, your search did not match any FAQs