Massive uncut diamond fetches 'record $63 million'
Canadian mining company Lucara Diamond on Monday announced the sale of a huge 813-carat diamond for a record $63 million.
Tue May 10 2016
Why it's so hard to put a price on the world's biggest diamonds
When miners unearth the world's biggest and rarest of diamonds, figuring out what they are worth can prove almost as difficult.
Fri Dec 25 2015