what is the heart of the ocean made of
Heart of the Ocean London-based jewelers Asprey & Garrard used cubic zirconias set in white gold[2] to create an Edwardian-style necklace to be used as a prop in the film. Asprey & Garrard produced and designed the necklaces: the result was three different and unique designs. Two of their designs were used in the film while the other went unused until after the film had been released. The three necklaces are commonly known as the original prop, the J. Peterman necklace, and the Asprey necklace. The three necklaces are all very similar but have distinguishable differences.