With the diamond prices skyrocketing, it is only fair that buyers question whether they are purchasing a real diamond or not. The market is flooded with counterfeits that look exactly like your real ones, making the distinction quite difficult. Thus, you either end up gifting ADs in the name of diamonds or purchase one for yourself out of trust.
So, here is a no-fluff guide to verifying, certifying, and sniffing out look-alikes. It helps you shop smart and know that your diamond is everything it claims to be.
10 Steps to Determine the Diamond Authenticity
Through years of experience in the diamond trade, we have developed skills to tell the difference between a real and a fake diamond. While some techniques require expert assistance, others can be carried out at home using simple tools. Below are some of the tests you can take for confirmation.
- Check for Diamond Certification
When purchasing a diamond, the seller will always provide you with an IGI or GIA certificate to validate its authenticity. It contains all the necessary information about the precious metal, including its grade, cut, clarity, colour, and weight. If your jewellery comes with multiple stones, you may receive a combined certificate instead of an individual report.
You can verify the certificate number on the official IGI or GIA website. In case no result is found, the authenticity certificate is most likely fake.
- Look for Hallmark
Authentic diamond jewellery typically comes with gold or platinum plating to create a secure surface. Check the metal clasp or surface for purity stamps, such as 14K, 18K, or 24K.
Most of the Indian jewellery pieces come with a BIS hallmark, which states that the gold plating meets government standards. Although the diamond is not necessarily fake if there is no BIS hallmark, a genuine dealer always provides the stamping for clarity.
- Look for Craftsmanship
Look closely and see if the diamond has a clean finish with no abrupt edges or poor creases. Furthermore, the prongs should be evenly placed and hold each piece of diamond securely so there’s no movement.
If you have a counterfeit, the prongs would be uneven, the edges would be rough, and there would be visible glue signs. Even if you are not a diamond expert, you can detect poor finishing easily and identify what you are dealing with.
- Try the Thermal Test
The test ascertains whether the diamond is real or not by looking at its chemical and physical properties. You need a diamond tester to validate the results, which is easily available online.
Make sure that you clean the diamond before the test. Any kind of additional layer can affect the results. Place your stone on the tester, and if it shows a positive heat sign, then it means the diamond is real. However, if it shows negative, that means you are dealing with a fake diamond.
- Take the Fog Test
A fog test is one of the most basic exercises to check whether the diamond is real or not. Breathe gently on the diamond to make it foggy. If your diamond is real, the fog will disappear momentarily due to heat dispersion.
The stone may not be genuine if the mist settles down for a few seconds. The fog test is only useful for a quick first-sign indication, but it doesn’t offer 100% accurate results.
- Use a Magnifying Glass
If you have a magnifying glass at home, use it to inspect your diamond closely. Most of the natural diamonds have inclusions, tiny internal marks that authenticate their originality. But if your stones look flawless, they might be an imitation.
Additionally, look closely around the edges to check for sharp facets. If the edges appear round, the diamonds might be fake after all.
- Perform the Weight Test
You need a standard weight chart and a specialised scale to check your diamond jewellery’s authenticity. Place the jewellery on the scale and write down the measurements. If the weight matches the standard chart numbers, you have an original diamond.
- Use the Clarity Test
Diamond experts generally test the jewellery’s originality with X-rays and standard tests. However, these X-ray machines are costly, and you cannot perform this test at home. If you have already performed the tests mentioned above and are looking for more, you can visit a trusted jeweller and confirm.
- Verify the Seller’s Reputation
Authenticity checks after purchase may not feel as satisfactory as they could have before. That’s why it is best if you only purchase from a trusted diamond dealer who provides transparent information while selling the products.
To further validate if the seller is genuine, you can look online for customer reviews, warranty details, and exchange terms and conditions. A clear sign is that genuine diamond dealers always offer easy returns and guarantees to their customers.
- Understand Lab-Grown Diamonds
Mined diamonds have always been in the spotlight. But today, as customers are turning more cautious and savings-focused, lab-grown diamond companies are emerging and filling the gap. Contrary to popular belief, lab diamonds ARE real diamonds, just not formed over billions of years inside the earth. You will get the same certifications, and verification tests will not show anything.
Final Thoughts
Diamond jewellery is a meaningful purchase, so verification should always be part of the process. While simple at-home checks can give early clues, certification and expert testing offer the most reliable results.
Whether you choose natural or lab-grown diamonds, transparency and authenticity matter most.
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