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Synthetic moissanite is an incredibly durable gem. In fact, the ceramic version of synthetic moissanite, called synthetic silicon carbide, is so hard and tough that it is used for body armor and mirrors in orbiting space telescopes! Fortunately, it also makes a gorgeous gem. Synthetic moissanite has a higher dispersion value (fire) than diamond, making it an impressive jewel. Each lab created gem is faceted by a skilled cutter to maximize its brilliance and enhance its exceptional fire. Second in hardness only to diamond, it is extremely resistant to scratching, abrasion, breaking and chipping.

Moissanite Polished
Moissanite Classification
Common Name Moissanite
Species Moissanite
Moissanite Optical Properties
Transparency Transparent
Dispersion Strength: Extreme Fire Value: 0.104
Refractive Index Over The Limit 2.648-2.697
Birefringence 0.043
Optic Character Uniaxial
Optic Sign Positive
Polariscope Reaction Doubly Refractive (DR)
Fluorescence SWUV: Inert to moderate orange or blue
LWUV: Inert to weak orange or blue
Pleochroism None
Moissanite Characteristic Physical Properties
Hardness 9.25
Streak Greenish Gray
Specific Gravity 3.170-3.240 Typical:3.220
Toughness Excellent
Inclusions Synthetic moissanite might contain white or reflective needles, tube like or plate like inclusions, channels and negative crystals.
Luster Adamantine
Fracture Conchoidal
Cleavage None
Moissanite Chemistry & Crystallography
Chemical Name silicon carbide
Chemical Formula SiC
Crystal System Hexagonal

Moissanite Colors

  • Orange Moissanite Orange
  • Red Moissanite Red
  • Purple Moissanite Purple
  • Pink Moissanite Pink
  • Multi-color Moissanite Multi-color
  • Gray Moissanite Gray
  • Brown Moissanite Brown
  • Blue Moissanite Blue
  • Yellow Moissanite Yellow
  • Colorless Moissanite Colorless
  • White Moissanite White
  • Green Moissanite Green

Alternate Names

Synthetic Silicon Carbide, Carborundum

Countries of Origin

United States of America (the); Hungary; Czechia; Egypt; Ukraine; Uzbekistan; Kazakhstan; Portugal; India; Azerbaijan; Canada; Austria; Turkey; Unknown; Norway; China; Russian Federation (the); Brazil; Mexico; South Africa; Israel; Australia; Bulgaria; Tajikistan


Synthetic moissanite is a remarkable stone. It has more fire than a diamond and, because it's created in a lab, we can ensure that every stone is cut to optimize its brilliance. Lab-created moissanite is technically lab-created silicon carbide. It is grown in a lab under controlled conditions. What does this mean? You can enjoy a stone that is extremely resistant to scratching, chipping, and breaking. You can enjoy a stone that doesn't just sparkle, it dazzles. You can enjoy a stone whose fire is exceptional and whose luster is without equal. And you can do it affordably. With a Mohs hardness of 9.2, it's second only to a diamond in hardness. Its fire is superior.

More About Moissanite

Mineral moissanite was discovered in 1893 by the man for whom it is named, Henri Moissan. At first, he thought the crystals were diamonds. He later came to know they were not. Those first crystals were discovered at Canyon Diablo, Arizona, in a meteorite. Until the 1950s, no other naturally occurring moissanite was found. It's extremely rare to this day, which is part of why lab-created stones are such a wonderful addition to our jewelry collections.

Moissanite Gemstone

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Showcasing 200 gemstones in over 1,000 pages and accompanied by more than 2,000 photos, The Sisk Gemology Reference is a must-have in every collector’s library. Each comprehensive, three-volume set features state-of-the-art photography, detailed illustrations, and scientifically precise descriptions to create an entrancing experience for gemstone amateurs and afficionados alike.

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.