That man, the first to give a diamond engagement ring, was the Archduke Maximilian of Austria ... Instead, thanks to a choice made by somebody who could probably eat a bar of gold for breakfast ...

From Beyoncé's emerald-cut stunner to Kate Middleton's meaningful sapphire sparkler, celebrities' jaw-dropping engagement rings make ... cushion-cut diamond from Dwyane Wade made so many ...

The man-made diamond boom is over, and prices for ultra-trendy lab-grown diamonds are set to tumble this year, industry veterans say. Paul Zimnisky, a leading diamond analyst, foresees jewelers ...