Origin of British Crown Jewels’ diamond revealed

The blue Nassak, also called ‘Eye of Lord Shiva,’ is a 43.38-carat diamond.

The royal tradition of using a wedding band of Welsh gold started nearly 100 years ago.

With few exceptions, no one knew about this gem's existence.

Early output of 1,720 carats of emeralds, including 826 carats of top quality ones, was achieved through a bulk-sampling program carried out within eight weeks of the completing the acquisition of the mine

The portable machine screens polished diamonds and jewellery, identifying synthetics as well as treated stones.

The discount of gem-quality lab-created diamonds relative to natural diamonds has doubled from 11-20% a year ago to 28-40% today.

The mpowerment laws now limit majority ownership by state miners only to the diamond and platinum sectors, as oppose to the entire mining sector.

The partners in Canada's Gahcho Kué mine, Mountain Province, said the planned acquisition opens up some potential new options for the operation’s future.

The average price of its gem-quality diamonds fell by 9% in 2017, it said, citing "changes in the product mix".