Does Moissanite Get Cloudy Over Time?

Let me be upfront with you. I’ve heard this question more times than I can count “I heard moissanite goes cloudy after a few years… is that actually true?”

And every single time, I feel the same mix of frustration and responsibility. Frustration because this myth has been scaring people away from one of the most brilliant, durable gemstones on the planet. Responsibility because if you’re about to spend money on a ring that’s supposed to symbolize forever, you deserve a straight, well-researched answer, not marketing copy dressed up as advice.

So here’s the deal. This post is going to cut through the noise, lay out the science, address the real causes of that occasional “hazy” look, and give you a practical, no-nonsense guide to keeping your moissanite looking exactly the way it did on day one.

What Even Is Moissanite?

Before we can understand why moissanite does or doesn’t get cloudy, it helps to understand what it’s actually made of.

Moissanite is a lab-created gemstone composed of silicon carbide (SiC), a compound that was first discovered in 1893 by Dr. Henri Moissan in a meteor crater in Arizona. Natural moissanite is incredibly rare, which is why nearly all moissanite sold today is grown in controlled laboratory settings.

That origin story matters for one big reason: the structure of silicon carbide is exceptionally stable.

It doesn’t degrade. It doesn’t absorb moisture. It doesn’t weaken under normal environmental conditions. The crystal lattice of moissanite is physically engineered by nature (and replicated by science) to hold its form essentially forever.

Does Moissanite Get Cloudy Over Time? Here’s the Real Answer

No. Moissanite does not get permanently cloudy over time.

This is the clear, scientifically supported answer backed by gemologists, jewelers, and laboratory testing. The internal structure of moissanite does not change with age or daily exposure. Unlike lower-quality alternatives such as cubic zirconia (CZ), moissanite does not absorb oils or moisture into its structure, which means it cannot cloud from the inside out.

But here’s where nuance matters and where a lot of surface-level articles leave you hanging.

While the stone itself won’t cloud permanently, moissanite can absolutely appear cloudy temporarily. And that distinction is everything.

What you’re seeing on a “cloudy” moissanite ring isn’t a degraded stone. It’s a dirty one. There’s a massive difference, and once you understand it, you’ll never be spooked by that hazy look again.

What Actually Causes That Cloudy Look?

Here’s where I want to get specific, because this is where most blogs stop short. They say “oh, it’s just surface buildup” without telling you exactly what that buildup is and why moissanite seems to attract it more noticeably than, say, your wedding band.

1. Natural Skin Oils

Your skin naturally produces oils throughout the day. Every time you handle your ring putting it on, taking it off, fidgeting with it, those oils transfer directly onto the stone’s surface. They’re invisible at first. But over days and weeks, they accumulate into a thin, greasy film that sits over the facets and blocks light from refracting the way it should.

Think of it like a fingerprint on a camera lens. The lens itself isn’t broken it just can’t perform at its best until it’s clean.

2. Lotions, Serums, and Skincare Products

This is one of the biggest culprits and one most people don’t think about. Hand moisturizers, sunscreens, and anti-ageing serums all of these contain emollients, silicones, and other compounds that leave residue on stone surfaces.

If you’re the kind of person who applies lotion throughout the day (and who isn’t, especially in winter?), your moissanite is quietly collecting that residue every single time.

3. Hard Water Mineral Deposits

If you live in an area with hard water and you wash your hands frequently while wearing your ring which most of us do, you’re exposing your stone to dissolved calcium and magnesium minerals. When the water evaporates, those minerals stay behind as a white, chalky film.

This is arguably the most overlooked cause of “cloudy” moissanite, especially in older stones. The good news: it’s entirely treatable.

4. Soap Film and Residue

Ironically, washing your hands with your ring on can leave it looking duller. Bar soaps especially have fatty acid components that cling to smooth surfaces. Even liquid soaps can leave a faint film if the ring isn’t rinsed properly afterwards.

5. Cosmetics and Makeup

Foundation, setting powder, hairspray, all of these can drift onto your ring and build up on the surface. The fine particulates in powders are particularly good at filling in the facet lines and dulling that sharp, laser-like reflection moissanite is known for.

6. Environmental Dust and Pollutants

If you live in an urban area, work outdoors, or simply exist in a world with air in it, airborne particles settle on your ring constantly. Most of the time you won’t even notice until you compare how your ring looks now versus six months ago.

Why Moissanite Handles All of This Better Than You Think

Moissanite ranks 9.25 on the Mohs hardness scale, second only to diamonds (which score a perfect 10). That’s harder than sapphires, rubies, and virtually every other gemstone you’ll find in a jewelry store.

Why does hardness matter for cloudiness? Because harder, non-porous stones don’t scratch and don’t absorb. When softer gemstones like opals, pearls, or even lower-grade crystals get dirty, contaminants can work their way into micro-abrasions and tiny pores in the stone’s surface. Over time, that grime becomes embedded and no amount of cleaning will reverse it. The stone is permanently dulled.

Moissanite doesn’t have that problem. Its non-porous surface means that everything that makes it look cloudy sits on top of the stone, not inside it. There’s nowhere for grime to hide. Clean it, and you get your stone back every time, without exception.

Beyond hardness, moissanite’s refractive index of 2.65–2.69 (compared to diamond’s 2.42) means it bends and disperses light with extraordinary intensity. This double refraction property is what gives moissanite that signature rainbow-flecked fire. But it also means that even a relatively thin layer of buildup can noticeably mute that sparkle, which is why a slightly dirty moissanite looks cloudier to the eye than a similarly dirty diamond might.

Moissanite vs. Other Stones: Cloudiness Comparison

The takeaway is stark. If you’ve compared moissanite to cubic zirconia and wondered why CZ “goes cloudy” that’s a fundamentally different material with a fundamentally different problem. CZ actually degrades internally over time. Moissanite doesn’t. They are not comparable in terms of longevity, and anyone telling you otherwise is misinformed.

Moissanite vs. Diamond: The Cloudiness Question

A common question I hear is: “Do diamonds get cloudy the same way moissanite does?”

The short answer: yes and no.

Diamonds also accumulate surface buildup from the same sources oils, lotions, soap, and hard water. And they definitely look dull when dirty. However, because diamonds are singly refractive (as opposed to moissanite’s double refraction), they don’t show that same dramatic drop-off in sparkle when a thin film forms on the surface. The visual effect is less pronounced.

With moissanite, because the optical performance is so extraordinary when clean, even a slight surface film creates a more noticeable contrast. This has led some people to assume that moissanite “goes cloudy” more easily when, in reality, they’re just more aware of when it needs cleaning, because clean vs. dirty is a more dramatic visual difference.

Think of it as a higher standard of sparkle requiring a higher standard of maintenance awareness. Not more work, just more reward when you keep up with it.

 Quick Reference: Does Moissanite Get Cloudy? Key Takeaways

Conclusion

In the end, keeping a moissanite ring brilliant over time is surprisingly simple. Moissanite itself doesn’t become cloudy or lose its sparkle it only collects the everyday residue of life, such as oils, lotions, and dust that temporarily dull its shine. A quick weekly clean with warm water, a small drop of dish soap, and a soft toothbrush is usually all it takes to restore its full brilliance.

Because of moissanite’s durability and optical properties, the stone is built to maintain its clarity and sparkle for decades with minimal care. No complicated treatments or constant professional cleanings are necessary, just a little consistency. With proper care, the ring you wear today can shine just as brightly years from now, making moissanite not only a beautiful choice, but also a remarkably practical one.