Does Moissanite Get Cloudy Over Time?

Quick Answer

Moissanite does not get permanently cloudy. Unlike cubic zirconia, moissanite has excellent hardness (9.25 on the Mohs scale) and chemical stability, meaning it resists the surface degradation that causes permanent cloudiness in lesser stones. What appears as cloudiness in moissanite is almost always a temporary film from oils, lotions, or soap residue fully removable with a simple clean.

Key Takeaways

The Short Answer Most People Are Looking For

If you're researching moissanite before buying or you've noticed your moissanite ring looking dull here's the direct answer: the stone itself will not cloud.

What people often describe as "cloudiness" is a film on the surface. Oils from your skin, hand cream, sunscreen, cooking, and even tap water minerals build up on any gemstone surface within days of regular wear. Moissanite is no exception. But unlike stones with surface porosity or internal structural instability, this film is 100% removable.

This is a fundamentally different situation from cubic zirconia, where the stone itself can develop internal hazing that cleaning won't fix. Moissanite simply doesn't work that way.

What Causes Moissanite to Look Dull or Cloudy?

1. Oil and Skin Residue

The most common culprit. Human skin produces natural oils constantly. Every time you touch your ring, trace amounts transfer to the stone's surface. Cooking, eating, applying cream, and typing all add to this layer. A few days of this and even the most brilliant stone looks flat.

2. Soap and Product Buildup

Counterintuitively, washing your hands with your ring on contributes to the film. Soap doesn't fully rinse away in a quick hand wash it leaves a residue that builds with every wash. Shampoo, conditioner, body wash, and skincare products compound this further.

3. Hard Water Minerals

In areas with hard water, tap water leaves calcium and mineral deposits on surfaces it contacts. Over time, these deposits create a white, chalky appearance that is often mistaken for cloudiness within the stone.

4. Chemical Exposure

Chlorine from swimming pools, bleach from cleaning products, and certain beauty chemicals can affect the metal setting particularly gold alloys and silver in ways that make the overall piece look dull. The moissanite stone itself resists chemical attack well, but a damaged setting can make the whole piece appear less brilliant.

Moissanite vs. Other Stones: Cloudiness Comparison

Moissanite and diamond behave identically in this respect both resist permanent clouding because of their extreme hardness and chemical stability. The key difference is that moissanite's higher refractive index makes a brilliance-killing surface film more noticeable when it appears, which is probably why the cloudiness question comes up more often with moissanite owners.

Does Moissanite Lose Its Sparkle Permanently?

No. This is one of the most common misconceptions about moissanite, often perpetuated by people comparing it unfavourably to diamonds. The sparkle in moissanite technically the result of its high refractive index (2.65–2.69) and dispersion (0.104) is a function of the stone's physical structure. That structure does not degrade.

The confusion often comes from people who have owned cubic zirconia in the past. CZ does permanently lose brilliance over time as the stone's surface becomes microscopically scratched and its internal structure degrades. Many buyers upgrading from CZ to moissanite carry that expectation forward  unnecessarily.

Moissanite purchased today, maintained with basic home cleaning, will look identical in 30 years to how it looks on day one. The stone is a single crystal of silicon carbide it does not break down.

The Exception: Older or Poorly Manufactured Moissanite

There is one scenario where moissanite can develop more persistent dullness: very early production moissanite from the late 1990s to mid-2000s occasionally had surface coating or anti-reflective treatments applied during manufacturing. These coatings could wear or lift over time.

Modern moissanite including all stones from reputable jewellers does not use these coatings. The manufacturing process has advanced significantly. If you own a vintage piece with what appears to be internal haziness rather than surface residue, the coating on early stone may be the cause. This is extremely rare and largely irrelevant for anything purchased in the last 15 years.

How to Tell If Your Moissanite Is Cloudy From Residue or Something Else

Try this test:

• Clean the stone thoroughly using the how to clean moissanite at home method (soak 20–30 minutes, soft brush, rinse well)
• Dry with a lint-free cloth and inspect under natural light

If the cloudiness disappears: It was surface residue. Clean more regularly going forward.

If cloudiness remains after thorough cleaning: Take the piece to a professional jeweller. The issue may be with the setting (a damaged or oxidised metal affecting light reflection) or, in rare cases, with the stone itself (more likely if it's a very old piece with a coating).

In the overwhelming majority of cases, a thorough clean resolves the issue entirely.

How to Prevent Moissanite from Looking Cloudy

Clean Regularly

Every 1–2 weeks for a ring worn daily. This is the single most effective prevention don't let residue build into a hardened layer. Explore our full moissanite ring collection for inspiration on setting-specific care.

Remove Before Chemical Exposure

Take off moissanite jewellery before applying hand cream, sunscreen, perfume, hairspray, or cleaning products. Applying these before putting jewellery on eliminates most residue buildup.

Remove Before Swimming

Chlorinated pool water and saltwater don't damage moissanite, but they accelerate residue buildup on the metal setting and can leave mineral deposits on the stone.

Store Properly

Store in a soft pouch or lined box. Storing loose with other jewellery allows the metal setting to scratch other pieces and collect dust faster.

Quick Daily Rinse

A 10-second rinse under warm running water after removing the ring before bed costs almost nothing and meaningfully extends the time between deep cleans.

Does Moissanite Look Different Over Time?

The stone itself? No. Well-maintained moissanite looks identical after 20 years as it does on day one. The physical and optical properties are locked into the crystal structure.

What can change over time:

• The metal setting : gold wears, silver tarnishes, moissanite in platinum settings stays robust but white gold loses its rhodium plating
• Prongs :  gradually wear and may need retipping after 5–10 years of daily wear
• Plating :  rose gold and white gold settings benefit from periodic re-plating

These are setting maintenance issues, not stone issues. The moissanite itself requires nothing beyond cleaning.

At Shraman Jewels, pieces we've sold years ago come in for routine prong checks and look as brilliant as ever the stones require no intervention, only the settings get any attention.

What Customers Say About Moissanite Cloudiness

The experience of long-term moissanite owners consistently aligns with the technical reality: stones that are cleaned regularly maintain their sparkle indefinitely. The accounts of moissanite "going cloudy" almost universally come from either:

• Pieces that haven't been cleaned in months
• Pieces in damaged or heavily tarnished settings
• Confusion with cubic zirconia from previous ownership

The rare exceptions involve very early production stones (pre-2005) with manufacturing coatings a non-issue for any modern moissanite engagement rings purchase. Read our comparative moissanite vs diamond guide for more details.