The invisible markings in these two diamonds suggest the possible introduction of a new security measure in diamonds to easily identify a diamond. Many thanks to GIA Mumbai and Tokyo and Gems & Gemology for the report.
Discover P.J. Joseph's blog, your guide to colored gemstones, diamonds, watches, jewelry, art, design, luxury hotels, food, travel, and more. Based in South Asia, P.J. is a gemstone analyst, writer, and responsible foodie featured on Al Jazeera, BBC, CNN, and CNBC. Disclosure: All images are digitally created for educational and illustrative purposes. Portions of the blog were human-written and refined with AI to support educational goals.
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Monday, August 21, 2023
Monday, April 19, 2021
CVD Laboratory-Grown Diamond
More CVD (chemical vapor deposition)-grown diamonds are entering the market, and in recent years, larger CVD-grown diamonds are beginning to emerge. Without analytical gem testing toolkit, a diamond's origin is very difficult to identify. We should expect more difficult-to-identify lab-grown diamonds in the coming years.

