Does Moissanite Get Cloudy? Dispelling the "Plastic" Myth
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Moissanite does not get cloudy. If you have been researching this gemstone for an engagement ring or fine jewelry, you have probably seen this question everywhere. The concern is understandable - nobody wants to invest in a stone that loses its look after a year.
Here is the truth. Moissanite jewelry is made of silicon carbide, a compound that scores 9.25 on the Mohs hardness scale. Its crystal structure is non-porous and stable. It does not degrade, fade, or lose clarity over time - not after one year, not after ten, not after fifty.
The cloudy myth comes from confusing moissanite with cubic zirconia - a completely different stone that does cloud permanently. This guide explains the science, breaks down the CZ comparison, and shows you how to keep your moissanite sparkling for life.
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Why Moissanite Does Not Get Cloudy
Silicon carbide is one of the hardest compounds on earth. At 9.25 Mohs, moissanite sits just below diamond and far above every other gemstone used in fine jewelry. That hardness protects the surface from micro-scratches that would scatter light and create a hazy look over time.
But hardness is only part of the story.
Moissanite is non-porous. Oils, lotions, and moisture sit on the surface - they cannot penetrate the stone. This is a critical difference from softer gemstones where residue works its way into the material and causes permanent damage.
The optical properties are equally permanent. Moissanite has a refractive index of 2.65, which is higher than diamond at 2.42. Its dispersion rate of 0.104 is nearly double that of diamond. These numbers are built into the crystal structure itself. They do not weaken or change no matter how long you wear the stone.
- Silicon carbide does not absorb oils, lotions, or moisture
- 9.25 Mohs hardness resists scratches from daily wear
- Non-porous surface keeps residue on the outside where it washes off
- Higher refractive index than diamond means lasting brilliance
- Heat resistant to over 2,000°F - the crystal structure stays intact
The fire and sparkle you see on day one are permanent. They do not diminish with age.
But hardness is only part of the story.
Moissanite is non-porous. Oils, lotions, and moisture sit on the surface - they cannot penetrate the stone. This is a critical difference from softer gemstones where residue works its way into the material and causes permanent damage.
The optical properties are equally permanent. Moissanite has a refractive index of 2.65, which is higher than diamond at 2.42. Its dispersion rate of 0.104 is nearly double that of diamond. These numbers are built into the crystal structure itself. They do not weaken or change no matter how long you wear the stone.
- Silicon carbide does not absorb oils, lotions, or moisture
- 9.25 Mohs hardness resists scratches from daily wear
- Non-porous surface keeps residue on the outside where it washes off
- Higher refractive index than diamond means lasting brilliance
- Heat resistant to over 2,000°F - the crystal structure stays intact
The fire and sparkle you see on day one are permanent. They do not diminish with age.
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Moissanite vs Cubic Zirconia; Where the Myth Comes From
Almost every "does moissanite get cloudy" concern traces back to cubic zirconia. CZ is a completely different material made of zirconium dioxide. It scores 8 to 8.5 on the Mohs scale, scratches more easily, and is porous enough to absorb skin oils and soap residue over time.
That porosity is the real problem.
When CZ absorbs oils and residue into its structure, the stone develops a permanent haze. No amount of cleaning can reverse it. Most CZ stones start showing visible cloudiness within a few months of regular wear. The surface also picks up micro-scratches quickly, which scatter light unevenly and make the stone look flat and lifeless.
People who have owned CZ jewelry often assume moissanite will behave the same way. It does not. The two stones are not even in the same category.
Moissanite is silicon carbide — 9.25 Mohs, non-porous, permanent clarity. Cubic zirconia is zirconium dioxide — 8 to 8.5 Mohs, porous, clouds irreversibly within months. These are fundamentally different materials with very different lifespans. One is built for daily wear across decades. The other is not.
If someone tells you moissanite looks "plastic" or goes cloudy, they are thinking of CZ.
That porosity is the real problem.
When CZ absorbs oils and residue into its structure, the stone develops a permanent haze. No amount of cleaning can reverse it. Most CZ stones start showing visible cloudiness within a few months of regular wear. The surface also picks up micro-scratches quickly, which scatter light unevenly and make the stone look flat and lifeless.
People who have owned CZ jewelry often assume moissanite will behave the same way. It does not. The two stones are not even in the same category.
Moissanite is silicon carbide — 9.25 Mohs, non-porous, permanent clarity. Cubic zirconia is zirconium dioxide — 8 to 8.5 Mohs, porous, clouds irreversibly within months. These are fundamentally different materials with very different lifespans. One is built for daily wear across decades. The other is not.
If someone tells you moissanite looks "plastic" or goes cloudy, they are thinking of CZ.
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Does Moissanite Lose Its Sparkle Over Time
Moissanite does not lose its sparkle. The brilliance and fire come from the physical structure of silicon carbide, and those properties do not change with age, heat, or daily wear. This also answers another common question about the lifespan of moissanite - it is designed to last a lifetime and beyond. There is no expiration date on its clarity or fire.
If your moissanite ring looks dull, it is almost always a surface issue - not a stone issue.
Skin oils transfer to the stone every time you touch it. Lotions, sunscreen, and cosmetics leave a thin film. Soap residue and hard water minerals can create what the moissanite community calls an "oil slick" - a greasy rainbow sheen similar to gasoline on water.
None of this damages the stone. It all sits on the surface and washes off with basic cleaning.
One interesting fact - moissanite actually repels oil better than diamond. Diamond is pure carbon and naturally attracts grease, which is why diamond rings tend to look dirty faster. Moissanite stays cleaner longer between washes.
Here is how to prevent and fix temporary dullness:
- Remove your ring before applying lotions or cosmetics
- Take it off before swimming in chlorinated water
- Clean weekly with warm water, mild soap, and a soft brush
- Get a professional cleaning once a year
- Store separately from other jewelry to avoid scratching the metal setting
A quick clean restores full brilliance every time. The stone underneath is exactly the same as the day it was cut. This is what separates moissanite from cheaper alternatives - the clarity is never at risk, only the surface needs attention.
If your moissanite ring looks dull, it is almost always a surface issue - not a stone issue.
Skin oils transfer to the stone every time you touch it. Lotions, sunscreen, and cosmetics leave a thin film. Soap residue and hard water minerals can create what the moissanite community calls an "oil slick" - a greasy rainbow sheen similar to gasoline on water.
None of this damages the stone. It all sits on the surface and washes off with basic cleaning.
One interesting fact - moissanite actually repels oil better than diamond. Diamond is pure carbon and naturally attracts grease, which is why diamond rings tend to look dirty faster. Moissanite stays cleaner longer between washes.
Here is how to prevent and fix temporary dullness:
- Remove your ring before applying lotions or cosmetics
- Take it off before swimming in chlorinated water
- Clean weekly with warm water, mild soap, and a soft brush
- Get a professional cleaning once a year
- Store separately from other jewelry to avoid scratching the metal setting
A quick clean restores full brilliance every time. The stone underneath is exactly the same as the day it was cut. This is what separates moissanite from cheaper alternatives - the clarity is never at risk, only the surface needs attention.
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How Zen Moissanite Guarantees Lasting Brilliance
Every Zen Moissanite gemstone is cut in the colorless E-F range with VVS1/VVS2 clarity. We guarantee our stones will maintain their optical properties for as long as you own them. No clouding. No fading. No loss of sparkle - backed by our lifetime warranty.
We use our own proprietary brand of moissanite, cut from premium silicon carbide to maximize fire and brilliance. Because the material naturally repels oil better than diamond, your ring stays cleaner between washes. We also offer a Cleaning Pen and complimentary professional cleaning with every purchase to help you keep your stone at its best.
Still have questions about moissanite durability? Book a consultation with our team or explore our collection online. We are happy to walk you through the science, the care, and the sparkle that makes moissanite a forever stone.
We use our own proprietary brand of moissanite, cut from premium silicon carbide to maximize fire and brilliance. Because the material naturally repels oil better than diamond, your ring stays cleaner between washes. We also offer a Cleaning Pen and complimentary professional cleaning with every purchase to help you keep your stone at its best.
Still have questions about moissanite durability? Book a consultation with our team or explore our collection online. We are happy to walk you through the science, the care, and the sparkle that makes moissanite a forever stone.
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Don't miss today's featured deals
Harley - Oval
$2,150.00
Randi - Oval
$1,800.00
Beth - Émeraude
$2,100.00
Harley - Poire
$2,150.00
Michelle - Poire
$2,400.00
Nicole - Ronde
$2,800.00
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