Chris Del Gatto: “We provide capital to smart companies”

Chris Del Gatto, CEO & Co-Founder of DELGATTO Diamond Finance Fund L.P., a New York-based non-bank lender to the diamond and jewelry industry, started his career as a diamond cutter when he was just 17. In his early 20’s, Chris went on to co-found a...

26 october 2020

Lunhianga Project: "The forecasts for this year point to the production of about 100 thousand carats of diamonds"

Advanced information, by the coordinator of Endiama’s Lunhinga Project Management Committee, Adérito Gaspar, points to a drop in production due to the pandemic, but with good prospects in view of the potential of the kimberlites of Camatchia, in production...

19 october 2020

Crisis is the way to development

Maria Krasnova belongs to the second generation of the St. Petersburg jewellers. She is a daughter of Pavel Sokolov, the founder of ‘Samotsvety ot Sokolova’ (Gems by Sokolov), a jeweller and expert gemologist famous for his collection of unique...

12 october 2020

Gaetano Cavalieri: Diamond producers no longer insisting that clients purchase what they are offered

Dr. Gaetano Cavalieri has served for the past 19 years as president of CIBJO, the World Jewellery Confederation. Uniting national jewellery and gemstone associations from more than 40 countries, including Russia, and many of the industry’s major corporations...

05 october 2020

Worth of gold and diamonds

Initiatives in Arts and Culture and De Beers recently co-hosted a webinar on the worth of gold and diamonds. The webinar, which was moderated by Mickey Alam Khan, the founder and editor of Luxury Daily, featured Jeffrey Christian, founder and managing...

28 september 2020

GSI identified HTHP lab-grown diamond with “laser drill channel”

27 february 2020

Gemological Science International’s (GSI) Mumbai laboratory identified a HTHP lab-grown diamond with what appeared to be laser drilled channel.  

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                                                 Image credit: GSI


Upon closer examination, the “laser drill channel” was found to be a typical HTHP inclusion that was cut open from top and pavilion. After this, the content of the inclusion was acid bleached out, while some residue was still present. 
The remnants of the inclusion have a strong resemblance to a laser drill treatment – this treatment is generally used to “clean out” black inclusions and enhance the appearance of a diamond.
It is a common misconception that a diamond can be identified as natural or lab-grown based on inclusions as the claim was made recently on Good Morning America Investigates. In this specific case, a hasty and inaccurate conclusion could have been made that the diamond is natural, with the appearance of what seems to be a laser drill channel, since there are no recorded cases of lab-grown diamonds with this treatment, GSI reported.

Alex Shishlo, Editor of the Rough&Polished European Bureau