Jewelry Comparable to Titanic: Heart of the Ocean Blue CZ Stud Earrings Look just like Kate Winslet in the infamous blockbuster film Titanic when you wear these breathtaking "Heart of the Ocean" Sapphire CZ Stud Earrings. The popular "Heart of the Ocean" design is finally available in earring form and our customers couldn't be happier! Each earring features a heart center stone that measure 1.6 carats. The surrounding accent stones are .01 carats each and the earrings measure 13 by 12 mm. The post backings make them comfortable and secure on your ears.