The company that owns an 80 percent stake in the Antwerp-based lab reportedly believes it is worth more than $200 million.
The company that owns an 80 percent stake in the Antwerp-based lab reportedly believes it is worth more than $200 million.
Rio Tinto has showcased its rare pink, red, violet and blue diamonds from the Argyle mine in Western Australia virtually to a group of collectors, connoisseurs and luxury jewellery houses.