Moissanite vs Cubic Zirconia: Which One Actually Lasts?

Moissanite and cubic zirconia (CZ) can look similar in a photo, but they are very different stones - and the difference matters if you want jewelry that lasts. Here is an honest comparison so you know exactly what you are buying.

The quick verdict

Moissanite is a genuine gemstone that is far harder, more brilliant and more durable than cubic zirconia. CZ is cheaper, but it scratches and clouds over time. If you want a diamond alternative you can wear every day for years, moissanite wins.

Hardness and durability

On the Mohs hardness scale, moissanite is about 9.25 - just below diamond at 10. Cubic zirconia is about 8 to 8.5, which sounds close but means CZ scratches and dulls much faster with daily wear. Moissanite keeps its sparkle for years; CZ often needs replacing.

Brilliance and fire

Moissanite has a higher refractive index than both diamond and CZ, so it throws more light and more colorful “fire.” CZ can look bright when new but tends to appear glassy and lifeless as it ages and clouds.

Clarity over time

CZ is porous and absorbs oils and grime, so it clouds and yellows over months. Moissanite stays clear and bright with basic care. This is the single biggest real-world difference.

Price

CZ is the cheapest option, moissanite sits in the affordable middle, and diamond is the most expensive by far. Moissanite is the sweet spot: real gemstone durability and diamond-like looks without the diamond price.

Which should you choose?

• Cubic zirconia - fine for very short-term or costume use.
• Moissanite - the best value for everyday, long-term jewelry that keeps its sparkle. It even passes a diamond tester (here is why).

Where to see moissanite in real settings

All our pieces use lab moissanite in real .925 sterling silver - browse cluster earrings, tennis chains and the full collection.

Frequently asked questions

Is moissanite better than cubic zirconia? Yes - it is harder, more brilliant, and stays clear far longer than CZ.

Can you tell moissanite from CZ? Over time, yes - CZ clouds and scratches while moissanite stays bright. A tester also distinguishes them.

Is moissanite worth the extra cost over CZ? For anything you will wear regularly, absolutely - it lasts years longer.