A 133.03-carat fancy vivid yellow diamond achieved a sale price of more than $5.5 million, becoming the largest fancy vivid yellow diamond to sell at auction. This was the top lot at Sotheby’s ...

When Tiffany & Co. acquired an exceptional 71-carat rough vivid yellow diamond from Canada’s Ekati mine last summer, instead of cutting and setting it in a jewel as expected, its chief gemologist, ...

These tinted diamonds make up just 0.01 percent of all natural diamonds mined, appearing in shades of pink, blue, yellow, green, and even red. Since 2005, pink diamonds have increased in value by ...

Diamond giant De Beers slashed the price of its precious solitaires amid plunging sales as bargain-hunting fiancées increasingly opt for cheaper lab-grown gems. Among De Beers’ larger stones, one ...