Vladimir Zboykov: New times have come for jewelers

How a personal collection of minerals was thrown on the scrap-heap, who is behind the destruction of gemstone consumption culture in Russia and why jewelers will soon have to choose between business and prison – all this was told to Rough & Polished...

Yesterday

Changing preconceptions in the diamond and financial markets

Eli Avidar is a man on the move…literally. In April, the former Israeli diplomat stepped away from the CEO’s office at the Israel Diamond Exchange, a position he had held for more than two years, and from the Israel Diamond Institute, where he had been...

13 august 2018

Chasing a dream…

Elina Chan, MD of Shenzhen Shi Qing Yu Zhubao Ltd completed her higher education from Xiamen University and Master’s degree from Hong Kong University. To achieve her dream to start a business, Elina gave up numerous job opportunities in Hong Kong and...

06 august 2018

Pangolin Diamonds using termites to find kimberlite indicators in Botswana

It is not a secret that the rate of kimberlite discovery in Botswana has dropped considerably and research has shown that termites can help diamond explorers have an understanding of the transport mechanism of kimberlite indicator minerals from the kimberlite...

30 july 2018

In another fifty years, we’ll have a different scale of valuation, and all those items of natural origin – including diamonds – will sharply increase in price

Within the framework of the Qatar-Russia 2018 Year of Culture, the World Diamond Museum hosts an exhibition of the Qatar Museums at the State Historical Museum in Moscow – "Pearls: Treasures of the Seas and the Rivers," that opened on 11 July...

24 july 2018

Geological enigma of blue diamonds revealed by GIA

02 august 2018

The research published by Gemmological Institute of America says that blue diamonds may get their attractive blue colour due to boron atoms that ancient oceans’ floors contained.

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Blue diamond with inclusions                                                                                                 Image credit: GIA


GIA has been examining 46 type IIb diamonds with inclusions submitted to the lab over two years. According to the research, after studying the inclusions the scientists were able to find the original stone and conclude that such diamonds were formed very deep in the earth at extremely high pressures. The minimal depth for formation of such diamonds was at – 410 km. The diamonds are said to be grown in the ocean crust. Borum is believed to be brought to the lower mantle, where it helped to form diamonds, because of the movements of Earth’s tectonic plates. 
The study is of importance to the industry as it was believed that there were no large gem quality diamonds deep in the earth. This research shows that most large and relatively pure diamonds are superdeep.  
The study will be presented at GIA’s International Gemological Symposium in October.

Victoria Quiri, Rough&Polished