Searching for moissanite diamonds real or fake? This guide explains what moissanite really is, how it compares to diamonds, and how to tell if you are looking at a genuine gem or a counterfeit.

What Is Moissanite?
Moissanite is a genuine gemstone – not a fake. It’s made of silicon carbide (SiC) and is produced in labs. Although very rare in nature, lab-grown moissanite has become widely available since the 1990s, offering a sparkly, ethical alternative to diamonds.
Moissanite isn’t trying to imitate diamonds – it stands on its own with distinct optical and physical traits.
Moissanite Diamonds Real or Fake
Real as a Gemstone
- Moissanite is a legitimate, certified gemstone with unique structure and properties.
- It’s not a diamond – but it’s not fake. At most, it is often mistaken for a diamond due to its brilliance.
Not a Diamond Substitute (in investment terms)
- It doesn’t hold value like traditional diamonds, especially in resale,
- Some sellers (especially online marketplaces like AliExpress) may sell CZ or low-quality glass labelled as moissanite – these are fake moissanite.
How to Tell If a Stone is Genuine Moissanite or Fake
Key Identification Methods:
Double Refraction Test: Under magnification, moissanite shows double facets or lines, unlike diamonds.
Sparkle & Fire: Moissanite reflects light with intense rainbow flashes-more than diamonds.
Color Hues: It may display slight yellow or green tones under certain lighting.
Tests & Tools:
- Thermal Conductivity Test: Diamonds conduct heat much better than moissanite.
- Electrical Conductivity Test: Moissanite is electrically conductive – unlike diamonds.
Hardness Check : Ranks ~9.25 on the Mohs scale – almost as hard as diamonds but still slightly softer.
Weight Comparison: Moissanite is lighter than diamond of the same size.
Certification
- Legitimate moissanite stones often come with GRA certification or details from reputable labs.
- Be cautious if a stone has no documentation or comes with only house-made or unverified certificates.
Conclusion
Moissanite itself is real – a high-quality lab-grown gemstone distinct from diamonds.
It is not fake, but it isn’t a diamond either.
Beware of counterfeit stones sold under the name moissanite without certification – these are fake moissanite.
When purchasing, always ask for certification, use reputable sellers, and consider professional testing if in doubt.
Moissanite offers a stunning, ethical, and affordable alternative to diamonds—but it’s essential to know what you’re buying.

