Moissanite vs Lab Diamond for a Tennis Bracelet: Which Lasts Longer?

We pit a moissanite tennis bracelet against lab-grown diamond to see which stone holds up better for daily wear, scratch resistance, and lasting brilliance.

Updated 9 Sep 2026 3 min read 7 sections

For a tennis bracelet, moissanite and lab diamond both last a lifetime of normal wear. Lab diamond is the harder stone (10 on the Mohs scale against 9.25 for moissanite), but both are hard enough that daily knocks will not scratch them, so the setting and clasp are what wear out first. The real differences are in the sparkle and the price: moissanite shows more rainbow fire and usually costs much less, while lab diamond gives the classic white diamond look.

What makes a moissanite tennis bracelet different from lab diamond?

Both stones are made in a lab, but they are different materials. Moissanite is silicon carbide, first found in tiny amounts in a meteor crater and now grown for jewelry. Lab diamond is pure carbon, chemically the same as a mined diamond, grown under heat and pressure or by vapor deposition. That difference in material explains the differences in hardness, sparkle and price.

Hardness and scratch resistance

Property	Moissanite	Lab diamond
Mohs hardness	9.25	10
Refractive index	2.65 to 2.69	2.42
Dispersion (fire)	0.104	0.044
Material	Silicon carbide	Carbon

At 9.25, moissanite is harder than sapphire (9) and much harder than emerald (7.5 to 8). Everyday surfaces such as desks, handbags and car doors will not scratch either stone. Diamond is the only common gem that can scratch moissanite, so store your pieces apart.

A small stone in a tennis bracelet is more likely to be lost than damaged. Check that each stone sits securely in its prongs or channel, and that the clasp has a safety catch.

Brilliance, fire and sparkle

Imolove moissanite tennis bracelet featuring a sparkling line of moissanite stones set in metal — Moissanite tennis bracelet$138.99Image from the merchant

This is where the two stones differ most. Moissanite has a higher refractive index and more than twice the dispersion of diamond, so a moissanite tennis bracelet throws more rainbow flashes, especially in direct sun. Lab diamond gives whiter, more classic sparkle.

If you like colorful, lively sparkle, moissanite suits you. If you want the traditional white diamond look, choose lab diamond. Neither stone loses its sparkle with age. Lotion, soap and skin oil can dull both for a while, and a clean brings it back.

Price and metal

Moissanite usually costs much less than a lab diamond of the same size, which matters on a tennis bracelet with many stones. Metal choice changes the price as well:

Setting metal	Good to know
Sterling silver	Lowest cost, softer, can tarnish and bend
14k gold	A good balance of strength and cost for daily wear
Platinum	Dense and durable, the most expensive

The money you save with moissanite can go into a stronger metal, which does more for how long the bracelet lasts than the stone does. See the current Imolove coupon code for pricing on a tennis bracelet in moissanite.

Durability for everyday wear

The stones will outlast the setting. What fails first on a tennis bracelet is usually a prong that bends, a link that stretches or a clasp that loosens. To help it last:

Take it off for the gym, gardening, swimming and heavy cleaning.
Check the clasp and look for loose stones now and then.
Clean with warm water, mild dish soap and a soft brush, then dry with a lint-free cloth.
Ask a jeweler before using an ultrasonic cleaner on small stones or a delicate setting.
Have a jeweler check the prongs once in a while if you wear it every day.

Color and clarity over time

Imolove moissanite solitaire necklace with a single moissanite stone on a delicate chain — Moissanite solitaire necklace$56.99Image from the merchant

Both stones are graded for color (on the D to Z scale) and for clarity. Modern moissanite is usually near colorless, though some older cuts showed a faint yellow or green tint in certain light. Lab diamond is available in high color and clarity grades at a lower price than a mined diamond. Neither stone yellows or clouds with age, so a moissanite solitaire necklace or a lab grown diamond solitaire necklace will look the same years from now if it is kept clean.

Who should buy each?

A moissanite tennis bracelet suits you if you:

Like strong rainbow sparkle
Want gold or platinum without a lab diamond price
Plan to wear it daily and prefer not to worry about the cost of a lost stone

A lab diamond tennis bracelet suits you if you:

Want the classic white diamond look
Care about the word diamond on the piece, for example for an heirloom
Have room in the budget for the higher cost

Imolove moissanite hoop earrings featuring sparkling moissanite stones along the hoop design — Moissanite hoop earrings$49.99Image from the merchant

Imolove also sells moissanite hoop earrings, a moissanite oval ring, a black moissanite ring and mother daughter matching rings if you want pieces to wear with the bracelet. For more on grading and care, read the Adamans guide to moissanite tennis bracelets or browse Moissanite Bracelets: Tennis, Bolo & More at Helzberg.

Questions

Does a moissanite tennis bracelet last as long as a lab diamond one?

Yes, in normal wear. Lab diamond is harder, but both stones are hard enough that daily wear will not scratch them. The setting and clasp wear before the stones do.

Does a moissanite tennis bracelet look fake compared to diamond?

Moissanite is a real gemstone with its own look. It shows more rainbow fire than diamond, which some people notice in bright light. In a white metal setting, many people will not see a difference at a glance.

Can a moissanite tennis bracelet scratch or chip?

Moissanite is 9.25 on the Mohs scale, harder than sapphire, so daily wear will not scratch it. A hard knock at the wrong angle can chip any gem, and diamond can scratch moissanite, so store pieces apart.

What metal should I choose for a moissanite tennis bracelet?

For daily wear we suggest 14k gold or platinum. Sterling silver costs less but is softer and more likely to bend over time.

How do I clean a moissanite tennis bracelet?

Use warm water, mild dish soap and a soft toothbrush, then rinse and dry with a lint-free cloth. Ask a jeweler before using an ultrasonic cleaner on a delicate setting.