Kate Winslet wore it on screen, Celine Dion rocked a $2.2 million real version. Titanic's storied blue gemstone ... was special," Asprey's then-head of jewelry Terry Davidson told Reuters of ...

All of the items put up for bids were actual costumes and props used ... was the prop used for Rose's "Heart of the Ocean" necklace. The Titanic door is a continuing subject of debate.