Where moissanite comes from

The story begins in 1893, when French chemist Henri Moissan was examining rock samples from a meteorite crater in Canyon Diablo, Arizona. Inside those samples, he found microscopic crystals of a mineral no one had identified before. That mineral turned out to be silicon carbide. It was later named moissanite in his honor.

Natural moissanite is extraordinarily rare. The original find consisted of tiny fragments trapped inside meteorite rock, and subsequent searches have yielded only trace quantities in certain types of volcanic rock and geological formations. Natural moissanite gemstones large enough for jewelry simply do not exist in any meaningful supply.

What Henri Moissan discovered was essentially a cosmic mineral, formed under the extreme conditions of space, arriving on Earth embedded in a fragment of meteorite. That origin gives moissanite a fascinating provenance. Rather than a laboratory invention, it is a genuine mineral with a documented natural form.

How moissanite is created

Because natural moissanite is so rare, all moissanite used in fine jewelry today is lab-created. The process involves growing silicon carbide crystals under carefully controlled thermal conditions over a period of several weeks.

Once grown, the crystals are cut and polished by skilled gem cutters using the same techniques applied to other precious stones. The controlled growing environment ensures consistent quality from stone to stone.

Lab-created moissanite is pure silicon carbide. It is produced through a process that replicates the conditions under which it forms naturally, just without the meteorite.

Brilliance and fire

Moissanite has a refractive index of 2.65, one of the highest of any gemstone used in jewelry. The refractive index determines how strongly a stone bends light as it passes through, and a higher value produces stronger brilliance.

Alongside brilliance, moissanite has strong fire. Fire refers to the dispersion of light into spectral colors — the flashes of orange, blue, green, and violet you see as the stone moves.

Moissanite also exhibits double refraction, meaning light entering the stone splits into two separate rays as it travels through the crystal, creating additional depth and sparkle.

Over time, moissanite retains its brilliance exceptionally well. A simple clean with warm water and a soft brush restores full brightness.

Hardness and durability

On the Mohs hardness scale, moissanite scores 9.25 to 9.5. That places it second among gemstones commonly used in fine jewelry, harder than sapphire, ruby, and emerald.

This makes it highly resistant to scratching in daily wear. Moissanite is ideal for rings and pieces worn every day, maintaining its look over years without significant wear.

Color and clarity grading

Moissanite is graded similarly to other gemstones. Color ranges from D (completely colorless) to warmer tones. D colorless is the highest standard and appears bright white with no visible tint.

Clarity refers to inclusions. VVS1 means inclusions are so minor they are not visible without magnification. To the naked eye, the stone appears perfectly clean.

Cut quality and why it matters

Cut is the most important factor in how a moissanite looks. It determines how light enters and reflects within the stone.

A well-cut stone maximizes brilliance and sparkle, while a poorly cut stone will appear dull regardless of size or clarity.

A smaller stone with an excellent cut will always outperform a larger stone with a poor cut.

Common stone shapes

Moissanite is available in many shapes including round, oval, cushion, emerald, pear, marquise, princess, radiant, and heart. Each shape offers a different visual style and character.

Moissanite in fine jewelry

Moissanite is used across all major jewelry types including rings, earrings, pendants, bracelets, and more.

It is typically set in high-quality metals such as sterling silver, 14K or 18K gold, and platinum, ensuring durability and long-term wear.

What to look for when buying moissanite

Focus on four key factors: cut quality, color and clarity, metal quality, and the reliability of the seller.

An excellent cut, D colorless grade, and VVS1 clarity will ensure the best visual result. Choosing a solid precious metal and a trusted seller ensures long-term satisfaction.