Moissanite vs Cubic Zirconia: Which Stone Lasts Longer?

Shop for an affordable, sparkly stone and two names come up again and again: moissanite and cubic zirconia (CZ). On a screen they can look almost the same. In daily wear, they behave very differently, and that gap matters if the ring or earrings are meant to last.

This guide compares the two on hardness, brilliance, durability and value, so you can decide which suits your budget and your plans. If you are weighing moissanite against a lab-grown diamond instead, read our moissanite vs lab-grown diamond guide.

What Are Moissanite and Cubic Zirconia?

Moissanite is silicon carbide, a rare mineral first found in a meteorite crater and now grown in laboratories for jewelry. Cubic zirconia is zirconium dioxide, a synthetic crystal that has been made in labs since the 1970s as an inexpensive diamond look-alike.

Both are lab-made, but they are different materials with different properties. Moissanite is a gemstone in its own right, while CZ is generally treated as a budget simulant.

Hardness and Scratch Resistance

On the Mohs scale, moissanite rates about 9.25, just below diamond at 10. CZ typically rates around 8 to 8.5. That may sound like a small gap, but over years of wear the difference shows.

A harder stone resists the tiny scratches that come from daily life, such as brushing against surfaces, bags and other jewelry. CZ is more prone to developing surface wear, which can leave it looking dull.

Sparkle and Fire

Moissanite has a higher refractive index than both CZ and diamond, and it splits light into flashes of rainbow color, often called fire. Many people love that lively look. Some prefer the more subtle sparkle of a diamond, so it is worth seeing the stone in different light before you decide.

CZ is bright when new, but it generally shows less fire and can look glassier. Side by side, most people can see the difference in how the stones play with light.

Color and Clarity Over Time

CZ is usually perfectly clear when it is new. With frequent wear, surface scratches and film from lotions and soaps can make it look cloudier. Cleaning helps, but a worn surface cannot be restored by cleaning alone.

Moissanite holds its polish well, so regular cleaning brings back the sparkle. Our guide on how to clean moissanite jewelry shows a simple routine using warm water, mild soap and a soft brush.

Price and Long-Term Value

CZ costs far less up front, which makes it handy for fashion pieces you plan to replace, or for a stand-in ring while you save. Moissanite costs more than CZ but far less than a diamond of the same size, and it is built to be worn for years.

If you plan to wear the piece every day, such as an engagement ring or wedding band, moissanite usually gives you much better value per year of wear.

Which Stone Should You Choose?

Choose CZ if you want a low-cost trend piece you will wear occasionally. Choose moissanite if you want a stone that stays bright with daily wear, shows lively fire and fits a ring you intend to keep. For a classic diamond look with the same hardness as a mined stone, consider a lab-grown diamond.

Shop Similar Styles

Yellow Gold Round White Moissanite Ring

From $1,100

Women Oval Cut Moissanite Ring with Baguette Stones

From $600

Full Rose Gold Baguette and Round Cut Moissanite Ring

From $800

Custom Two Tone Moissanite Luxury Pendant

From $1,300

How IVEVAR Can Help

Every IVEVAR piece is made to order and crafted by hand. Orders ship within 7 working days of confirmation, and delivery usually takes 7-9 working days after that. Shipping is free and fully insured worldwide, and customs duties and import taxes are paid by IVEVAR. Returns are accepted within 30 days of delivery for unused, unworn items in their original condition; custom and engraved pieces are not eligible for refunds.

Not sure which stone suits you? Book a virtual appointment and we will walk you through the options.

Frequently Asked Questions

Is moissanite the same as cubic zirconia?

No. Moissanite is silicon carbide, while cubic zirconia is zirconium dioxide. They differ in hardness, fire and how they wear over time.

Which is harder, moissanite or CZ?

Moissanite, at about 9.25 on the Mohs scale versus roughly 8 to 8.5 for CZ.

Does cubic zirconia get cloudy?

With regular wear it can pick up surface scratches and film that make it look duller than when new.

Is moissanite a good choice for an engagement ring?

Yes. Its hardness and lasting polish make it well suited to a ring worn every day.

Does moissanite look like a diamond?

It looks similar but shows more colorful fire. Seeing it in person or on video helps you judge whether you like that look.

Final Thoughts

CZ is a fine choice for inexpensive fashion jewelry, but moissanite is the stronger option for pieces you want to wear and keep. Browse our moissanite ring collection to find a style you love.