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What Is Moissanite? A Complete Guide From SVS Fine Jewelry

Moissanite Education · Long Island

What Is Moissanite?

Moissanite is a brilliant lab-created gemstone made of silicon carbide — first discovered in 1893 by French scientist Henri Moissan inside a meteor crater in Arizona. Today, virtually all moissanite sold for jewelry is laboratory-grown to create a stone with extraordinary brilliance, fire, and durability. This guide covers everything you need to know about moissanite as an engagement ring stone, how it compares to natural and lab grown diamonds, and which option is right for you.

For decades, moissanite has been one of the most popular alternatives to natural diamonds — offered at a fraction of the price while delivering exceptional sparkle and durability. Modern moissanite is colorless, beautifully cut, and ranks 9.25 on the Mohs hardness scale, making it second only to diamond (which scores 10) for everyday wear and lifetime durability.

At SVS Fine Jewelry in Oceanside, NY, we have served Long Island couples since 2003 with expert guidance on every type of stone — natural diamonds, lab grown diamonds, moissanite, and colored gemstones. Our GIA Graduate Gemologists help you understand the differences between each option so you can choose the stone that fits your style, your priorities, and your budget. Stop in, call, or book a private appointment to see our final moissanite collection in person.

9.25
Mohs hardness scale
2.65 RI
Refractive index — higher than diamond
Lab Grown
Created in laboratory conditions
Discovered 1893
By Henri Moissan in Arizona meteor crater
Shop the Collection Book an Appointment
Limited Inventory · Final Pieces
Moissanite Engagement Rings & Loose Stones — 30% Off

SVS Fine Jewelry is selling down our final moissanite collection. Just 13 pieces remain — a curated selection of loose stones and finished engagement rings, all available now at 30% off. Once these are gone, our showroom will exclusively feature natural diamonds and lab grown diamonds going forward.

Shop the Collection Book an Appointment

The History of Moissanite

Moissanite was discovered in 1893 by French chemist Dr. Henri Moissan while examining rock fragments from a meteor crater in Diablo Canyon, Arizona. Initially mistaken for diamond, Moissan later identified the mineral as silicon carbide — a substance previously unknown in nature. The mineral was named "moissanite" in his honor following his Nobel Prize in Chemistry in 1906.

Natural moissanite is exceptionally rare — found in only trace amounts in meteorites, kimberlite deposits, and as inclusions in other minerals. The natural supply is far too small to support commercial jewelry production. In 1995, North Carolina-based Charles & Colvard developed a process to grow gem-quality moissanite in laboratory conditions, making it commercially available as a fine jewelry stone for the first time. Today, virtually all moissanite sold globally is lab-grown using advanced thermal growth techniques that produce stones nearly indistinguishable in beauty from rare natural specimens.

How Moissanite Compares to Diamonds

Moissanite is often considered alongside diamonds — both natural and lab grown — for engagement rings and fine jewelry. Each stone has distinct properties that affect appearance, durability, and price.

Property Moissanite Natural Diamond Lab Grown Diamond
Composition Silicon Carbide (SiC) Pure Carbon (C) Pure Carbon (C)
Hardness (Mohs) 9.25 10 10
Refractive Index 2.65 2.42 2.42
Sparkle Profile High fire, rainbow flashes Classic white sparkle Classic white sparkle
Origin Lab-grown Earth-mined Lab-grown
Certifiable by GIA Limited reports Yes — full grading Yes — full grading
Relative Price (1ct) $ $$$$ $$

What Makes Moissanite Different

Higher refractive index, more fire. Moissanite's refractive index of 2.65 is higher than diamond's 2.42, which means it bends light more dramatically. The result is exceptional fire — the rainbow flashes you see when light hits the stone. Some couples love this dramatic sparkle. Others find it can read as more "rainbow-like" than the classic white brilliance of a diamond, particularly in larger stones above 1.5 carats.

Double refraction. Moissanite is doubly refractive, meaning light splits into two rays as it passes through the stone. Diamond is singly refractive, producing crisper white light return. The visual difference is subtle but noticeable to a trained eye, particularly in elongated cuts like emerald, oval, and marquise.

Excellent durability for daily wear. At 9.25 on the Mohs hardness scale, moissanite is the second-hardest jewelry gemstone — tougher than sapphire, ruby, and emerald. It is well suited to everyday wear and resists scratching, chipping, and clouding for a lifetime.

Exceptional value at every size. Moissanite typically retails for 5 to 10 percent of the cost of a comparable natural diamond. A 1-carat moissanite engagement ring can be a few hundred dollars, while a comparable natural diamond ring runs into the thousands — and lab grown diamonds typically fall between the two.

The Modern Alternative

Have You Considered Lab Grown Diamonds?

If moissanite caught your eye for its value and lab-grown origin, you may want to explore lab grown diamonds before deciding. Lab grown diamonds are chemically, physically, and optically identical to natural diamonds — same pure carbon, same crystal structure, same Mohs 10 hardness, same refractive index, same classic white sparkle — but produced in laboratory conditions with the same eco-conscious advantages that draw people to moissanite.

Lab grown diamonds typically cost 30 to 50 percent less than natural diamonds of equivalent quality, are fully GIA-certified, and qualify for SVS's Lifetime Diamond Upgrade Program and Lifetime Warranty — benefits that don't apply to moissanite. Many couples who initially considered moissanite ultimately choose lab grown diamonds when they see both options side by side in our showroom.

Read our complete guide to lab grown diamonds or book a side-by-side comparison appointment with one of our GIA Graduate Gemologists to see the difference for yourself.

Who Is Moissanite Right For?

Moissanite is a strong choice for couples and clients prioritizing:

  • Maximum carat weight at lower budgets. Moissanite delivers significant size and presence at a fraction of natural diamond pricing.
  • Lab-grown origin. All moissanite sold for jewelry is lab-created, with no mined-stone supply chain considerations.
  • Bold, fiery sparkle. Couples who love the dramatic rainbow flashes of high refractive index find moissanite's sparkle profile distinct and beautiful.
  • Travel and active-lifestyle wear. Moissanite's hardness and lab-created origin make it an excellent option for travel rings or active wear where natural diamonds feel like a higher risk.

Moissanite may not be the right choice if you prefer the classic white sparkle of diamond, want long-term resale value, or value the lifetime upgrade and warranty programs that natural and lab grown diamonds qualify for at SVS Fine Jewelry. In those cases, lab grown diamonds typically offer the best balance of value, beauty, and ongoing service benefits.

Moissanite

Shop Moissanite

The Moissanite Engagement Collection

SHOP ALL RINGS

SVS Fine Jewelry serves couples across Long Island — Oceanside, Long Beach, Rockville Centre, Lynbrook, Garden City, Merrick, Island Park, and all of Nassau County — as well as clients traveling from New York City, New Jersey, and Connecticut. Family-owned and locally loved since 2003, our 4,000+ sq ft Oceanside showroom offers expert guidance from GIA Graduate Gemologists across every stone option, with over 2,500 five-star reviews from the couples we have served.

The right stone for your engagement ring is the one that fits your story, your style, and your priorities. We help you see them all in person.

Final Inventory
Shop Our Final Moissanite Collection — 30% Off
Just 13 pieces remain in our final moissanite collection — a curated mix of finished engagement rings and loose stones, all available now at 30% off. Once these are sold, our showroom will exclusively feature natural and lab grown diamonds going forward. Shop the collection online or book a private appointment to see them in person.
Shop the collection Book an appointment
Explore the Alternative
Lab Grown Diamonds at SVS
If moissanite caught your eye for its value and lab-grown origin, lab grown diamonds may be the better fit. Same chemistry, same sparkle, and same Mohs 10 hardness as natural diamonds — at 30 to 50 percent less than equivalent natural stones. Fully GIA-certified, eligible for our Lifetime Diamond Upgrade Program, and available across every top designer setting in our showroom.
Read our lab grown diamond guide
Shop the Collection Book an Appointment
Natural Diamond Upgrade Program — trade up your
          natural diamond for a larger stone anytime, full
          credit toward your next purchase at SVS Fine Jewelry
          Oceanside Long Island NY

Natural Diamond Upgrade Program

At SVS Fine Jewelry we've got you covered. We are committed to ensuring that your diamond purchase remains a timeless investment.

5-Star Google Rating with over 2,500 verified
          reviews — Long Island

5-Star
Google Rating

With over 2,500 reviews and a 5-star rating, SVS is the trusted name in fine jewelry—where excellence and customer satisfaction is our promise.

Lifetime Nationwide Warranty included with every
          engagement ring purchased at SVS Fine Jewelry,
          Oceanside Long Island NY

Nationwide Warranty

At SVS Fine Jewelry, every engagement ring purchased in-store or online comes with our exclusive complimentary Lifetime Warranty.

Flexible financing options available at SVS Fine
          Jewelry — special financing on qualifying purchases,
          Oceanside Long Island NY

Financing Available

At SVS Fine Jewelry we work with different lenders to offer a variety of financing options. Our goal is to ensure that the jewelry you desire is within your reach.

Free standard shipping on jewelry orders over $75
          and free 2-day delivery on orders over $300 — SVS
          Fine Jewelry Oceanside Long Island NY

Free Shipping

Enjoy complimentary standard shipping on all orders over $75, and experience the luxury of free 2-day delivery when you spend $300 or more.

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