• Home
  • Products
  • Gallery
  • Articles
  • Downloads
  • Price list
  • About Us
  • Our Clients
Magilabs

Application Note:

NDT breaking the 10 carat barrier:  World record faceted and synthetic diamonds investigated

Branko Deljanin1, Matthias Alessandri2 , Dr. Adolf Peretti3 , Mikko Åström4, Dr. Andrey Katrusha5

1 CGL-GRS Swiss Canadian Gemlab, Vancouver, Canada
2 GRS Lab (Hong Kong) Limited, Hong Kong, China
3 GRS Gemresearch Swisslab AG, Lucerne, Switzerland
4 M&A Gemological Instruments, Järvenpää, Finland
5 Consultant, St. Petersburg, Russia

 

Published in GRS Gemresearch Swisslab magazine Contributions to Gemology No. 15, July 2015

Diamonds grown by New Diamond Technology (NDT) in Russia are the largest colorless synthetic diamonds reported to date, with weights up to 60ct crystals and 10.02 ct faceted stones. Using a combination of standard gemological and spectroscopic tests, it is possible to identify all New Diamond Technology (NDT) colorless and blue HPHT-grown diamonds. Synthetic diamonds from NDT can therefore be distinguished from natural diamonds of similar quality.
Copyright 2023 by MAGILABS Terms Of UsePrivacy Statement