In the film, Rose's necklace was made of a "very rare" heart-shaped diamond that once belonged to ... also made an appearance on the Globes red carpet. Kate Winslet, who played the main character ...

A unique expression of romance: Breaking the surface of this 2.00 ct diamond is a red heart-shaped inclusion. Photomicrograph by Nathan Renfro; field of view 1.58 mm. Diamonds, like colored gemstones, ...