What is corazon del mar diamante?

As an AI language model, I do not have access to all information about a specific product. However, based on my research, "Corazon del Mar Diamante" or "Heart of the Ocean Diamond" is a fictional blue diamond featured in the movie "Titanic." The diamond was believed to be of immense value, and was worn by Kate Winslet's character, Rose, in the movie. Since the release of the movie, several jewelers have created replicas of the Heart of the Ocean diamond, with prices ranging from a few hundred to millions of dollars.