Moissanite engagement rings have grown significantly in the US market since 2020. But many buyers still aren't sure whether moissanite is the right choice for them — or whether they're "settling" by not choosing a diamond. This guide gives you the honest answer.
What Is Moissanite?
Moissanite is a gemstone composed of silicon carbide (SiC). It was first discovered in 1893 in a meteor crater in Arizona by Nobel Prize-winning chemist Henri Moissan. Natural moissanite is extremely rare; virtually all moissanite used in jewelry is lab-created.
Key facts:
- Mohs hardness: 9.25 (second only to diamond at 10)
- Refractive index: 2.65–2.69 (higher than diamond at 2.42 — creates more light dispersion)
- Not a diamond: different chemical composition (SiC vs. carbon)
- FTC classification: gemstone, not a diamond
Moissanite vs. Diamond: The Honest Comparison
| Property | Moissanite | Lab-Grown Diamond | Natural Diamond |
|---|---|---|---|
| Material | Silicon carbide (SiC) | Carbon crystal | Carbon crystal |
| Hardness | 9.25 | 10 | 10 |
| Sparkle type | High fire, rainbow dispersion | Brilliant white flash | Brilliant white flash |
| Is it a diamond? | No | Yes (FTC recognized) | Yes |
| Price (1ct equivalent) | $150–$600 | $800–$1,500 | $5,000–$8,000 |
| Resale value | Minimal | Low to moderate | Moderate |
What Moissanite Actually Looks Like
Moissanite's higher refractive index produces more "fire" — colorful rainbow flashes — than a diamond. In direct sunlight or under strong lighting, moissanite can produce more visible color dispersion than a comparable diamond. Some people love this; others prefer diamond's more "icy" white brilliance.
The distinction is more visible in larger stones (above 1ct) and in direct bright light. In typical indoor lighting or lower-light environments, moissanite and diamond are extremely difficult to distinguish visually.
Who Should Choose a Moissanite Engagement Ring?
Moissanite is the right choice if:
- Your top priority is maximum stone size for your budget
- You want a beautiful, durable gemstone that is not marketed as a diamond
- You or your partner are aware it's moissanite and comfortable with that
- You care about durability (moissanite at 9.25 is essentially scratch-proof for daily wear)
- You plan to upgrade the ring later and want a beautiful placeholder
Who Should NOT Choose Moissanite?
Moissanite may not be the right choice if:
- Your partner specifically wants a diamond (natural or lab-grown)
- Certification and documentation of the stone type matter to you
- You want a stone with potential resale or investment value
- You're buying the ring as a family heirloom that will be passed down
The Key Distinction to Have
The decision should always be transparent. Don't present a moissanite ring as a diamond to a partner who would care about the distinction. Moissanite is a beautiful, legitimate gemstone choice — but it's not a diamond, and describing it as one is misleading.
Bornreal offers both moissanite and real lab-grown diamond engagement rings. If you're unsure which is right for your situation, contact our team for honest guidance.