I have an exact replica of the Titanic "Heart of the ocean" necklace. It was made by the J. Peterman Company. This jeweler was the same one who made the real heart of the ocean that Rose wore in the movie Titanic. This is not a knock-off. It is made from genuine swarovski crystal and sterling silver. It comes with a certificate of authenticity from 20th century fox and comes in its original box. I payed $500.00 for it on Ebay. I'm selling for $200.00. This is a limited edition necklace. The J. Peterman Company doesn't make this necklace anymore. If interested please call 803-370-8170 or 803-412-4266 and ask for Lori.