A 100-carat perfect diamond isn’t expected to go up for auction until April, but your intended isn’t likely to care about receiving a belated gift of this size and cut. The 100.20-carat ...

A “perfect” diamond said to be so large that it draws awe-struck people across a room has sold for $22 million at a Sotheby’s auction in New York. The 100-carat, emerald cut, D color ...

You should be choosing the perfect diamond ring based on seven rather than four caveats, and Pippa Middleton’s ring has been inspiring Londoners on which ring to buy, say Mayfair’s 77 Diamonds.

D color diamond is the largest of its kind ever sold at an auction, according to the auction house. It is also one of only six perfect diamonds of 100 carats or more to be auctioned in the last 25 ...