The diamond business is yet bright and has a good future in the coming days

Hitesh Patel, Managing Director of Dharmanandan Diamonds Pvt. Ltd., joined the family business in 1997 to help his father Laljibhai Patel, the founder of Dharmanandan Diamonds Pvt. Ltd. Egged on by its success, Hitesh set up the overseas presence of...

Today

The talk around LGDs is all hype

As a teenager, Luca Luterbacher began to design and manufacture single pieces and individual items for wealthy private family friends from Switzerland and Lichtenstein. In 2017, he finally invested in his own luxury trademark "Luterbacher."...

12 august 2019

Correct adjustment of advertising is the major challenge

At the recent Amberforum held in the Baltic city of Svetlogorsk, Andrey Yanchevsky, Head of the trade representation of the LA VIVION jewelery company shared his opinion with the correspondent of Rough&Polished on the state and prospects of the jewellery...

05 august 2019

Small-scale diamond mining is the future in Botswana – Leon Daniels

Pangolin Diamonds, which is currently the most active diamond exploration company in Botswana, has called upon authorities in the southern African country to include diamonds into the minerals permit for small scale mining operations. Pangolin chief...

29 july 2019

“There has been a strict policy in Israel against LGDs; have been forbidden on IDE trading floor for years.”: Aviel Elia, Managing Director- IDI

Aviel Elia, an attorney by profession, has served as Legal Adviser and Company Secretary of IDI since 2013. As a key member of the Israel Diamond Institute (IDI) management team, he has been involved in developing company strategy and negotiating...

22 july 2019

New record for lab-grown diamonds set in Russia

20 april 2015
The New Diamond Technology company, based in St. Petersburg, Russia, once again announced its success in growing large colorless nitrogen-free type IIa single diamond crystals using HPHT technology.
The team, consisting of two doctors of science – Dr. A.Katrusha and Dr. A.Koliadin, and technician R.Isakov, grew one of the largest colorless nitrogen-free crystal weighing over 32 carats in record growing time of 300 hours.
The previous record was set by De Beers group that grew a big nitrogen-containing diamond weighing 34.8 carats (type Ib, yellow), which can be described as technical quality stone, in 600 hours.
The New Diamond Technology was able to achieve excellent results by growing a crystal of 20.69 mm in length with a width of 17.53 mm and a height of 11.80 mm. The crystal, weighing 32.26 carats in total, was grown using an experimental technology, and therefore has minor flaws. In the lower part of the crystal body there are such defects as twinning and parallel expansion, but the top portion (more than 2/3 of the diamond) still formed a fine monocrystal.
It is possible to get a polished DF-color and VS-clarity diamond crystal weighing about 8 carats from it, or it can be machined into a set of wafers for the electronics industry and CVD matrix.
Dr. B.N. Feigelson, a well-known expert in the field of synthetic diamonds from US Naval Research Laboratory has expressed his opinion on the results of New Diamond Technology: "This is an important achievement. A psychologically important one. I've been convinced for a long time that growing large HPHT diamonds is not just a real thing, but it is economically feasible and necessary. Linear growth rate of the crystal demonstrated by the company makes this a good result that is particularly impressive and important."
Analysis of the parameters of the monocrystal leads to a promising conclusion that the weight of grown colorless diamond crystals can reach 50 carats in the near future with adequate growth time, and this technology can be the basis for the cultivation of very large gem quality crystals.

Veronica Novoselova, Rough&Polished, St. Petersburg