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Frequently Asked Questions

All your moissanite queries answered, check out the list of questions and answers below

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1. About Moissanite

What is Moissanite

Moissanite is an optically stunning, clear gemstone with unparalleled brilliance and fire dispersion. Originally discovered in an Arizona meteorite crater in 1893 by Nobel Prize-winning chemist Henri Moissan, the world’s top gemologists have since been mesmerized by this exceptional stone. Moissanite is made up of a naturally-occurring chemical compound called silicon carbide, which is produced from the intense heat and pressure that a falling meteorite undergoes. Moissanite today is lab-grown, however, due to its extreme rarity and because natural moissanite typically can only be found in tiny particles unsuitable for jewelry.

Is moissanite a lab-created diamond or simulated diamond?

No. Moissanite is a chemically unique gemstone made up of silicon carbide, with its own unique optical properties. Though it is a clear gemstone that can initially be difficult to discern from a diamond, moissanite is actually a superior stone in terms of brilliance and fire.

2. Moissanite Characteristics

How is moissanite graded on clarity and color?

Moissanite is graded on the same scales as a diamond for clarity and color. Clarity is determined by GIA-certified gemologists who study gems under a 10x jeweler’s loupe, inspecting each piece for inclusions and imperfections. Generally speaking, moissanite has a very high average clarity rating – typically grade VS, which indicates that any imperfections are only visible under 10x magnification. Only 10% of faceted diamonds attain this rating. A moissanite’s color uses the GIA diamond color grading scale. Moissanite stones currently can range from colorless (D-F), near-colorless (G-I), to faint color (J-K).

Why is moissanite measured in mm instead of carats?

A carat is a weight measurement specific to diamonds. A moissanite is not measured in carats because moissanite’s chemical compound is lighter in weight than that of a diamond, and therefore not directly comparable, even if visually they the same. For example, a 6.5mm diamond weighs 1 carat, while a 6.5mm moissanite weighs 0.88 carats. To help consumers more easily compare, we use what’s called Diamond Equivalent Weight (DEW), which measures the “look and feel” of a moissanite, as it compares to a diamond of the same visual measurement. A 6.5mm moissanite, therefore, would be 1 carat DEW.

What is a moissanite’s “fire”?

The term “fire” refers to what a gemologist would call “dispersion.” The level of dispersion has to do with the rainbow-colored flashes that a gem emits when white light hits it – i.e. the prism-like dispersion of white light into a spectrum of rainbow colors as a result of refraction through the gem. With a dispersion measurement of .104, moissanites have 2.4 times more fire than a diamond. This is what gives moissanite its impressive quality of giving off bright flashes of rainbow light, more than any other popular gemstone.

Will my moissanite scratch or crack easily?

No. Moissanite is one of the toughest gemstones on Earth, even surpassing a diamond in its ability to withstand impact and resist breaking or chipping. Moissanites are also exceptionally hard, second only to diamonds, and cannot easily be scratched.

Does moissanite have inclusions?

Yes, nearly all gemstones have inclusions, which naturally arise in the formation of their crystalline structure. Moissanites, however, have an extremely high clarity rating, averaging VS on the clarity scale. This means that their tiny, needle-like inclusions are only visible under 10x magnification and cannot be seen by the naked eye. Only 10% of cut diamonds can match the average clarity of moissanite.

3. Moissanite vs Diamond

How does moissanite compare to diamonds and other fine gemstones?

Moissanite is an exceptional stone for many reasons, but probably the biggest of those reasons come from the fact that it is truly the most brilliant, sparkly gemstone on the planet. Moissanites have the highest refractive index, 2.4 times more fire, greater luster and durability than a diamond. Moissanites are also extremely hard, second only to diamonds on the Moh’s scale of hardness.

How can I identify moissanite from a diamond or other colorless gemstone?

There are four (4) ways in which we recommend identifying moissanite from other gemstones:

  1. Test the stone using a Tester Model 590 or other electronic devices to distinguish.
  2. Use a 10x magnification loupe to determine if the doubling of facet junctions is visible.
  3. Moissanite typically has needle-like or micropipe-like inclusions which run perpendicular to the table facet. These can be identified using a 10x loupe, and can help determine if your stone is a moissanite.
  4. A certified gemologist can use appropriate equipment to measure the specific gravity and refractive indices of your stone, which help to identify if it is a moissanite.

4. Loose Moissanite Products

How can i buy Loose Moissanite Products

Our products gallery showcases the best precision cut moissanite stones from our exclusive selection. You have to register and open a customer account before you can view the prices of items listed in the product gallery page.

How are Decent Group's Moissanite Products different

Each of our stones is precision cut to exude optimum brilliance and fire and is guaranteed to offer unmatched beauty. We adhere to the highest industry standards of cutting and manufacturing, using fully automated and state of the art lab equipment and machinery. Our core focus on sustainability enables us to produce the best quality moissanite making it both ethical and eco-friendly.

Will my moissanite retain its value?

Moissanite is an exceptional gemstone, with unparalleled brilliance, fire and durability It is also extremely rare, and can take several months to grow in a lab. Because of these qualities, Decent Gem’s created moissanite is expected to retain or increase in value over time.

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