If you've been engagement ring shopping — or even casually browsing — you've probably come across moissanite. It looks like a diamond, costs a fraction of the price, and sparkles like nobody's business. So is it the right choice? As a custom jeweler who works with both stones regularly, here's my honest take.

What Is Moissanite, Exactly?

Moissanite was originally discovered in a meteor crater in 1893 by Henri Moissan (hence the name). Natural moissanite is incredibly rare — almost all moissanite on the market today is lab-created silicon carbide. It's not a diamond simulant in the way cubic zirconia is. Moissanite is its own gemstone with its own optical properties, and it's genuinely beautiful.

How Moissanite Compares to Diamond

Brilliance and Fire

This is where moissanite actually outperforms diamond. Moissanite has a higher refractive index (2.65 vs. 2.42 for diamond), which means it bends more light and throws off more rainbow flashes — what gemologists call "fire." In direct sunlight, a moissanite will sparkle with more colorful flashes than a diamond. Whether you love that or find it a bit much is purely personal preference. Some clients adore the extra sparkle; others prefer the more subtle, white brilliance of a diamond.

Hardness and Durability

Diamond is a 10 on the Mohs hardness scale — the hardest natural material on earth. Moissanite comes in at 9.25, which makes it the second hardest gemstone used in jewelry. For everyday wear in an engagement ring, moissanite is more than tough enough. It won't scratch, cloud, or lose its sparkle over time.

Color

Early moissanite had a noticeable yellow or greenish tint, which turned a lot of people off. Modern moissanite (especially "Forever One" and similar premium grades) is virtually colorless and comparable to a D–F color diamond. In most settings and lighting conditions, the average person cannot tell the difference.

Price

This is the biggest differentiator. A one-carat equivalent moissanite typically costs $300–$600, while a comparable natural diamond runs $4,000–$8,000+ depending on quality. Even lab-grown diamonds, which have come down significantly in price, still cost several times more than moissanite. If budget is a major factor, moissanite gives you a stunning stone at a fraction of the cost.

Common Concerns I Hear

"Will people be able to tell it's not a diamond?"

In normal viewing conditions, no. Even most jewelers need a loupe or specialized testing equipment to distinguish moissanite from diamond. The main visual difference is that extra rainbow fire, which is most noticeable in larger stones (over 1.5 carats) under direct sunlight. In a 1-carat round brilliant set in a ring, it's virtually indistinguishable to the naked eye.

"Will it hold its value?"

Moissanite doesn't hold resale value the way natural diamonds do — but here's the thing most people don't want to hear: most diamonds don't hold their retail value either. Unless you're buying investment-grade stones, jewelry is something you buy to wear and enjoy, not to resell. If long-term value is important to you, a natural diamond is the stronger choice, but don't overestimate the "investment" angle of any jewelry purchase.

"Is it 'real'?"

Moissanite is a real gemstone — it's just not a diamond. There's nothing fake about it. The question is really about what matters to you: the symbolism of a diamond, or the beauty of the stone regardless of what it's called.

When I Recommend Each Stone

Choose moissanite if: You want maximum sparkle for your budget, you're practical about jewelry spending, you prefer to invest your money elsewhere (honeymoon, house, experiences), or you love the fiery, rainbow brilliance moissanite is known for.

Choose diamond if: The tradition and symbolism of a diamond matters to you or your partner, you prefer a more understated brilliance, you want something with stronger long-term value, or you're drawn to the story of a natural stone that's been forming underground for billions of years.

Consider lab-grown diamond if: You want an actual diamond but at a lower price point, you care about ethical sourcing, or you want something that's chemically identical to a natural diamond without the premium.

My Honest Advice

I've set beautiful moissanite stones and beautiful diamonds — and both can be the centerpiece of a ring you'll treasure forever. What I always tell my clients is this: don't let anyone make you feel less-than for choosing moissanite, and don't let anyone pressure you into spending more than you're comfortable with on a diamond. The best stone for your ring is the one that makes you happy every time you look at your hand.

If you'd like to see moissanite and diamond side by side before you decide, I offer complimentary consultations where you can compare stones in person. Schedule yours here.