GRS GemResearch Swisslab AG
  • About
    • Company Profile
    • Dr. A. Peretti
  • News
  • GRS Reports
    • Gemstone Reports
    • Enhancement Disclosure
    • Shipping Information
    • Prices
  • Research
    • Analytical Methods
    • Inclusion Gallery
  • Publications
    • Article Library
    • Video Library
    • Contributions to Gemology
    • Auction References
    • Shop
  • Shop
  • Report Verification
  • Contact
  • 0
    Cart
10/09/2015

NDT breaking the 10-carat barrier

Authors: Adolf Peretti, Branko Deljanin, Matthias Alessandri, Mikko Åström, Andrey Katrusha Published in: Jewellery News Asia – September 2015 Download Publication

Diamond, PDF, Synthetics
22/07/2015

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

Authors: Adolf Peretti, Branko Deljanin, Matthias Alessandri, Mikko Åström Published in: Contributions to Gemology 15 Download Publication

Diamond, Synthetics
01/04/2015

The world of pink diamonds

Authors: Branko Deljanin, Adolf Peretti, Matthias Alessandri Published in: ICA InColor Spring 2015 Download Publication

Diamond
01/03/2014

New generation of synthetic diamonds reaches the market (part C): Origin of yellow color in CVD-grown diamonds and treatment experiments

Authors: Adolf Peretti, Branko Deljanin, Alexandre M. Zaitsev, Matthias Alessandri, Willy Bieri Published in: Contributions to Gemmology No. 14 Download Publication

Diamond, Synthetics
01/03/2014

New generation of synthetic diamonds reaches the market (part B): Identification of treated CVD-grown pink diamonds from Orion (PDC)

Authors: Adolf Peretti, Branko Deljanin, Franz Herzog, Willi Bieri, Matthias Alessandri, Detlef Günther, Daniel A. Frick, Eduard Cleaveland, Alexandre M. Zaitsev Published in: Contributions to Gemmology No. 14 Download Publication

Diamond, Synthetics
01/11/2013

New generation of synthetic diamonds reaches the market (part A): CVD-grown blue diamonds

Authors: Adolf Peretti, Franz Herzog, Willy Bieri, Matthias Alessandri, Detlef Günther, Daniel Frick, Eduard Cleaveland, Alexandre M. Zaitsev, Branko Deljanin Published in: Contributions to Gemmology No. 14 Download Publication

Diamond, Synthetics
01/01/1991

Color measurement of fancy diamonds applying computer-based multichannel spectroscopy

Authors: Adolf Peretti, Walter Boguth Published in: Conference Paper – International Gemological Symposium Download Publication

Diamond
Latest GRS Alerts
New types of synthetic periclase identified by C2S inclusions – dicalcium silicate cement hardener 19/12/2018
Warning: Synthetic Padparadscha sold as Natural in the trade. 11/09/2018
GRS Alert: Unusual phosphorescent pebbles identified as synthetic aggregates 24/04/2016
Recent Posts
Video: Mozambique Ruby Collection – A Lifetime Experience 05/05/2020
Color stability test: Overview of “type” classifications 23/12/2019
Introducing GRS brilliancy-type “vibrant” 14/11/2019
GRS Newsletter

Unable to display Facebook posts.
Show error

Error: (#10) This endpoint requires the 'manage_pages' or 'pages_read_engagement' permission or the 'Page Public Content Access' feature. Refer to https://developers.facebook.com/docs/apps/review/login-permissions#manage-pages and https://developers.facebook.com/docs/apps/review/feature#reference-PAGES_ACCESS for details.
Type: OAuthException
Code: 10
Please refer to our Error Message Reference.
  • Contact Us
  • GRS on Twitter
  • GRS On Facebook
  • GRS On Google+
  • GRS On Pinterest
  • GRS On Instagram
  • GRS On YouTube
© 2020 GRS GemResearch Swisslab AG | www.gemresearch.ch
  • Disclaimer
  • Company Profile
  • News
  • Gemstone Reports
  • Contact
  • Privacy Policy
  • GRS Report Verification
We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you agree with it.OkPrivacy policy