J.Lo's enormous emerald-cut "rare" engagement ring could be worth up to $5 million, according to leading diamond experts Kaitlyn is a former Assistant Style & Beauty Editor at PEOPLE. After Alex ...

Even after cut, clarity ... sapphires); even the rough from which a stone was cut (the Cullinan diamond, and all those that followed). The Insofu emerald, a 6,225-carat piece of rough found ...