Moissanite vs. Lab-Grown Diamond: The Real Differences

Both are lab-created, both are gorgeous, and both cost less than a mined diamond — so how do you choose between moissanite and a lab-grown diamond? Here's the honest comparison.

The quick answer

A lab-grown diamond is chemically identical to a mined diamond. Moissanite is a different gemstone (silicon carbide) that looks just as brilliant — often with more fire — at a much lower price. If maximum sparkle-per-dollar is your goal, moissanite wins. If you specifically want a diamond, lab-grown is the affordable route.

Sparkle and fire

Moissanite has a higher refractive index, so it throws about 2.4× more colorful fire than diamond. Some people love that extra rainbow flash; others prefer the subtler shine of diamond. In a photo or across a room, they read the same.

Hardness and durability

Diamond is a 10 on the Mohs scale; moissanite is 9.25. Both are far harder than gemstones like sapphire and excellent for everyday wear.

Price

This is where they diverge most. A lab-grown diamond is cheaper than mined, but moissanite is cheaper still — often a fraction of the cost for the same carat size and look.

Ethics and sustainability

Both are conflict-free and lab-created, so neither carries the ethical baggage of mining.

Which should you buy?

Choose moissanite if you want the most brilliance for your budget and you love fire. Choose a lab-grown diamond if it matters to you that the stone is a diamond.

If moissanite sounds right, every Zovelle stud is D color, VVS1+, GRA-certified, in solid sterling silver — from $54.99.

Use code WELCOME15 for 15% off your first order.