How to Spot Fake Diamonds: A Buyer’s Guide
- Dhruv Ostwal
- Feb 21, 2025
- 2 min read

Diamonds symbolize love, luxury, and timeless beauty, but the market is full of imitations that look deceptively real. Whether you're shopping for an engagement ring or an investment piece, knowing how to distinguish between real and fake diamonds is essential.
At Shahani Jewels, we guarantee authentic, certified diamonds, so you never have to worry about fakes. Here’s a buyer’s guide to help you identify genuine diamonds.
1. The Fog Test
A quick and easy way to test a diamond’s authenticity is the fog test:
✅ Breathe on the diamond—if it stays foggy for more than a couple of seconds, it might be fake.
✅ Real diamonds disperse heat quickly, so the fog should disappear almost instantly.
💡 Tip: If you're buying online, make sure the diamond comes with a certification from a reputed gemological institute.
2. The Water Test
(Insert an image of a diamond being dropped into a glass of water.)
This test works because diamonds have high density:
✅ Drop the diamond into a glass of water—if it sinks, it’s likely real.✅ Fake diamonds, such as cubic zirconia, tend to float or sink slowly.
💡 Looking for authentic diamonds? Check out Shahani Jewels collection of certified diamonds.
3. The Light Reflection Test
A real diamond sparkles with brilliance and fire:
✅ Hold the diamond under light—if it reflects white and rainbow colors, it’s likely genuine.
✅ Fake diamonds often appear too glassy or have an excessive rainbow effect.
💡 Want the best sparkle? Explore our handcrafted diamond jewellery at Shahani Jewels.
4. The Magnification Test
Use a jeweller’s loupe to check for imperfections:
✅ Real diamonds usually have natural inclusions or tiny imperfections.
✅ Fake diamonds (like cubic zirconia) are often too perfect with no flaws.
💡 At Shahani Jewels, all our diamonds come with a certification, ensuring authenticity and quality.
5. The Heat Test
Diamonds are incredibly strong and can withstand heat:
✅ Heat the stone with a lighter for 30 seconds, then drop it into cold water.
✅ A real diamond remains intact, while a fake one may crack or shatter.
💡 Not sure how to check? Visit Shahani Jewels, and our experts will help you find the perfect diamond.
6. The Newspaper Test
This test checks how a diamond bends light:
✅ Place the diamond on a newspaper—if you can read the text through it, it’s likely fake.
✅ A real diamond refracts light so much that the letters should appear blurry or invisible.
💡 Want more insights? Read this expert guide from the Gemological Institute of America (GIA) on diamond authenticity:
7. Buy Certified Diamonds Only
The best way to ensure authenticity is to buy diamonds that come with certification from reputable gemological labs, such as:
✅ GIA (Gemological Institute of America)
✅ IGI (International Gemological Institute)
✅ HRD (Hoge Raad voor Diamant)
💡 All diamonds at Shahani Jewels come with trusted certifications.
Final Thoughts:
Shop Authentic Diamonds at Shahani Jewels
At Shahani Jewels, we take pride in offering:
💎 100% Certified Natural Diamonds
💎 Ethically Sourced & Handcrafted Jewellery
💎 Transparent Pricing & Expert Guidance




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