Rio Tinto (ASX, LON,: RIO) has unearthed a 158.20-carat gem-quality yellow diamond at its Diavik mine, located 200 km south of the Arctic Circle in Canada’s Northwest Territories. The precious ...

This story centers on a rare mineral encased in a diamond, a substance that could never survive on the planet's surface without its protective casing. In the 1980s, miners in Botswana's Orapa mine ...

Now the collection is one of the largest of its kind. The diamonds we know best are sparkling and colourless, but this collection ranges in colour from yellow-green to pink. Mike Rumsey, Senior ...

Diversified miner Rio Tinto has recovered a 158.2 ct yellow diamond at its Diavik mine, in Canada – one of only five yellow diamonds weighing more than 100 ct ever unearthed at the mine in its ...

Rio Tinto has unearthed one of the largest gem-quality yellow diamonds ever discovered in Canada, from its Diavik Diamond ...