When buying a diamond, you want to ensure you’re getting the real deal. But with high-quality imitations on the market, how can you tell if a diamond is genuine? Here are some expert tips to help you distinguish between a real and fake diamond.

1. The Fog Test

Breathe on the diamond—if the fog clears instantly, it's real. If the fog lingers, it could be a fake, as real diamonds disperse heat quickly.

2. The Water Test

Drop the diamond into a glass of water. A real diamond will sink due to its high density, while many imitations will float or sink slowly.

3. Checking for Inclusions

Most real diamonds have tiny imperfections called inclusions. A flawless-looking stone may be a sign that it's cubic zirconia or another synthetic alternative.

4. UV Light Test

Many diamonds fluoresce under UV light, glowing blue. While not all real diamonds have this trait, if yours glows green, yellow, or doesn’t react at all, it might not be authentic.

5. Professional Testing

The best way to confirm authenticity is to have your diamond checked by a jeweler using a diamond tester. They can measure electrical and thermal conductivity, which is unique to diamonds.

If you’re buying a diamond, always request certification from a trusted authority like the GIA (Gemological Institute of America) to ensure quality and authenticity.