If you’re in the market for a stunning, affordable alternative to a diamond, you’ve probably come across moissanite, and for good reason. It’s known for its incredible sparkle, eco-friendly origins, and wallet-friendly price tag. But you may be wondering, does moissanite tarnish over time? That’s a smart question to ask before you invest in a ring or necklace you’ll wear every day. Let’s clear up the confusion and talk about what really happens to moissanite over time and how to care for it properly.
What Is Moissanite, Really?
Moissanite is a gemstone made of silicon carbide. Originally discovered in a meteor crater by Henri Moissan, natural moissanite is incredibly rare, so the stones used in jewelry today are lab-created. That’s a good thing! It means you get a gemstone with near-diamond brilliance without the ethical or financial weight.
Moissanite is often compared to diamonds because of its durability and sparkle, but it has a charm all its own. It’s more fiery (hello, rainbow flashes!) and doesn’t come with the same price tag or environmental impact.
Does Moissanite Tarnish?
Here’s the short answer: No, moissanite does not tarnish.
Tarnishing typically refers to a chemical reaction – like when silver turns dark or copper develops a green patina. That doesn’t happen with moissanite. This gemstone is incredibly stable and resistant to oxidation, corrosion, or chemical breakdown, so it won’t discolor or turn cloudy over time.
That said, moissanite can sometimes appear dull or hazy, but that’s usually due to residue buildup, not actual tarnishing.
Why Moissanite Might Look Cloudy (But Isn’t Tarnished)
If your moissanite starts looking a little cloudy or loses its sparkle, don’t worry, it’s likely due to:
- Lotion or soap buildup
- Hard water deposits
- Natural oils from your skin
- Everyday grime or dust
The good news? These are temporary and totally fixable. Your moissanite isn’t damaged or tarnished, it just needs a little TLC.
How to Keep Your Moissanite Sparkling Like New
Just like any piece of jewelry, moissanite needs occasional cleaning to stay brilliant. Here’s how to care for it:
1. Gentle Cleaning at Home
Use warm water, a few drops of mild dish soap, and a soft toothbrush. Gently scrub around the stone and setting, rinse thoroughly, and pat dry with a soft cloth.
2. Use a Jewelry Cleaner
Ultrasonic cleaners are safe for moissanite (though always double-check your setting type first). These can help remove oil slicks or residue more effectively than basic soap and water.
3. Avoid Harsh Chemicals
Moissanite won’t tarnish from bleach or household cleaners, but your ring setting might, especially if it’s silver or plated. Stick with gentle cleaning methods for best results.
Is Moissanite More Durable Than Other Stones?
Yes! Moissanite scores 9.25 on the Mohs hardness scale, second only to diamonds (which are a 10). That makes moissanite extremely resistant to scratches and everyday wear.
This high hardness is part of why it doesn’t tarnish; it’s not porous or reactive, so it won’t absorb chemicals or oxidize like softer gemstones might.
What About the Ring Setting – Can It Tarnish?
This is where some confusion can come in. While moissanite itself does not tarnish, the metal used in the jewelry can.
- Sterling silver can tarnish and turn dark over time.
- Gold (especially white gold) may need re-plating if it has a rhodium finish.
- Platinum doesn’t tarnish, but it can develop a patina that gives it a softer, aged look.
So if you notice your ring looking a little off, check whether it’s the stone or the setting that needs a refresh.
Does Moissanite Turn Yellow Over Time?
Nope – moissanite won’t turn yellow. Modern moissanite is designed to maintain its color for life. Older stones (pre-2000s) sometimes had a faint yellow or greenish tint, but those days are long gone.
If you’re seeing a weird hue, it’s most likely:
- Residue buildup
- Lighting reflections
- Tarnish on the setting, not the stone
How to Prevent the “Oil Slick” on Moissanite
Sometimes moissanite can develop a rainbow-colored film known as an “oil slick.” It’s not actual damage or tarnish, it’s usually from contact with body oils, lotions, or other residues.
Here’s how to remove it:
- Soak your jewelry in warm water with a drop of dish soap
- Scrub gently with a soft brush
- Rinse and dry completely
- For stubborn buildup, try a jewelry cleaner specifically for moissanite
Bottom Line: Moissanite Is Built to Last
So, back to our original question: Does moissanite tarnish? Absolutely not. One of the best things about moissanite is that it stays beautiful with minimal effort. Unlike metals or softer gemstones, moissanite is:
- Non-reactive
- Hard and durable
- Fade-resistant
- Easy to clean
With regular care, your moissanite jewelry will keep its dazzling sparkle for years to come, without any tarnish in sight.
Thinking About Buying Moissanite?
If you’re shopping for your first moissanite piece, or replacing a diamond, you’re making a smart, sustainable choice. Look for high-quality stones, solid settings, and trustworthy retailers. Many online stores even offer lifetime warranties and ethical sourcing practices, so you can shop with confidence.
