What moissanite actually is
Moissanite is silicon carbide, a compound first discovered in 1893 by scientist Henri Moissan inside a meteor crater. Natural moissanite is vanishingly rare — so rare that virtually every moissanite stone in jewelry today is lab-created. That doesn't make it imitation or "fake." It's a distinct gemstone in its own right, engineered specifically for brilliance and durability, just as lab-grown sapphires and rubies are real sapphires and rubies.
Diamond, by contrast, is pure crystallized carbon, formed under intense heat and pressure — either deep in the earth over billions of years or, increasingly, in a lab.
Hardness: 9.25 vs 10
On the Mohs hardness scale, diamond ranks 10 — the hardest known natural material. Moissanite ranks 9.25, making it the second-hardest gemstone commonly used in jewelry, harder than sapphire and ruby (both 9).
What does that mean in practice? A moissanite stone resists scratching extremely well. The only common material that can scratch it is diamond itself. For an engagement ring or any piece worn every day, 9.25 is more than hard enough — this is not a delicate stone.
Sparkle: brilliance and fire
This is where the two stones visibly differ. Two optical properties matter:
- Refractive index (how much light bends inside the stone): moissanite measures 2.65–2.69, diamond 2.42. Higher numbers mean more brilliance — more white light bouncing back to your eye.
- Dispersion (how much light splits into rainbow colors, called "fire"): moissanite measures 0.104, diamond 0.044. Moissanite throws noticeably more rainbow flashes.
In plain terms, moissanite tends to look livelier and more colorful in its sparkle, while diamond has a subtler, whiter scintillation. Neither is objectively better — it's a matter of taste. One caveat that matters for both stones: cut quality drives sparkle more than anything else. A well-cut moissanite will out-sparkle a poorly cut diamond every time, and vice versa.
Price: the real difference
Here's the gap that gets everyone's attention. A moissanite stone of comparable size and appearance typically costs a small fraction of a diamond — often one-tenth or less. The reasons are straightforward: moissanite is lab-created with a scalable process, there's no mining involved, and supply isn't constrained the way diamond supply is.
The practical result: for the same budget, you can wear a significantly larger moissanite stone than you could a diamond — or get the look you want while keeping thousands of dollars in your pocket.
Ethics and origin
Because moissanite is created in a lab, there's no mining involved — no open pits, no supply-chain questions about where a stone came from. For buyers who want to sidestep the ethical concerns historically tied to mined diamonds, moissanite removes the question entirely.
Durability for daily wear
Moissanite holds up beautifully to everyday life. Its hardness means it won't scratch under normal wear, and unlike some diamond simulants (cubic zirconia, for example, which can dull and cloud over time), moissanite keeps its polish and fire for decades. It doesn't yellow, fog, or degrade with exposure to light.
One thing worth remembering: a ring's durability isn't just about the stone. The setting matters too. Sterling silver — the 925 stamp you'll see on quality pieces — is a durable, time-tested metal for daily wear, though like any precious metal it benefits from having its prongs checked by a jeweler now and then.
Which should you choose?
There's no wrong answer, only trade-offs:
- Choose diamond if you want the hardest natural gemstone, tradition, and the specific look of diamond's subtler sparkle — and the budget that comes with it.
- Choose moissanite if you want maximum brilliance per dollar, a lab-created origin with no mining, excellent durability, and a larger stone for your money.
Moissanite isn't a diamond substitute pretending to be something it's not. It's its own gemstone with its own strengths — and for a lot of buyers, those strengths win.
Take a look at our moissanite collection at https://dbdiamonds.shop — D color, VVS1 clarity stones set in 925 sterling silver, with free US shipping and a 30-day money-back guarantee.
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