How to Spot a Lab-Grown Diamond: Expert Tips & Tricks

The world of diamonds is evolving, with lab-grown diamonds gaining popularity for their ethical sourcing, affordability, and stunning brilliance. But with so many options available, it's natural to wonder: How can you tell a lab-grown diamond from a mined one?

While the naked eye can't always differentiate between the two, there are a few expert tips and tricks that can help you determine the origin of your diamond.

1. The Sparkle Test:

Fluorescence: Lab-grown diamonds often have a higher degree of fluorescence, meaning they emit a visible glow under UV light. This fluorescence can result in a slightly yellow or blue hue, which can be observed under a jeweller's loupe.

Brilliance and Fire: While both lab-grown and mined diamonds exhibit brilliance and fire, lab-grown diamonds might exhibit a slightly more "crisp" or "sharp" sparkle due to their specific growth process.

2. The Inclusion Check:

Growth Lines or Striations: Lab-grown diamonds can sometimes display growth lines or striations, which are linear marks that appear as parallel lines within the stone.

Minute Inclusions: Mined diamonds often contain inclusions, tiny imperfections that are naturally occurring. Lab-grown diamonds can also have inclusions, but they may differ in appearance due to their growth process.

3. The Certificate of Origin:

Lab Reports: Reputable jewellers will provide a certificate of origin or lab report for every diamond they sell. This report will clearly state whether the diamond is lab-grown or mined.

Certification Bodies: Look for certificates from reputable organisations like the Gemological Institute of America (GIA), American Gem Society (AGS), or International Gemological Institute (IGI).

4. Professional Expertise:

Consult with a Gemologist: A skilled gemologist can use specialized tools and techniques to determine the origin of a diamond, such as a loupe, refractometer, or other gemological equipment.

Ask for a Professional Evaluation: Don't hesitate to ask your jeweler for a professional evaluation of the diamond before making a purchase.

Beyond the Visual:

Pricing: Lab-grown diamonds are generally more affordable than mined diamonds. If the price seems suspiciously low for the size and quality of the diamond, it might be a sign that it's lab-grown.

Sustainability and Ethics: If you prioritize ethical sourcing and environmental responsibility, lab-grown diamonds offer a compelling choice.

In Conclusion:

While the differences between lab-grown and mined diamonds can be subtle, by understanding these tips and seeking professional guidance, you can confidently identify the origin of your diamond and make an informed decision that aligns with your values and preferences.