The necklace known as the "Heart of the Ocean" in the 1997 film "Titanic" is a work of fiction created by director James Cameron. It is a stunning blue diamond necklace and plays a significant role in the film, symbolizing wealth, love, and eventually, the eternal connection between the two main characters, Jack and Rose. The "Heart of the Ocean" is said to be a blue diamond surrounded by white diamonds, and it bears a strong resemblance to the famous Hope Diamond, which is a large, blue diamond that carries a history of intrigue and legend. However, the "Heart of the Ocean" itself is not a real artifact from the actual RMS Titanic. In the film, the necklace is presented to Rose by her wealthy fiancé, Cal Hockley, and becomes a poignant token of her journey. The fictional backstory is that the diamond was originally owned by Louis XVI and was cut into a heart shape after the French Revolution. The "Heart of the Ocean" serves multiple functions within the narrative of the film: 1. Symbol of Wealth and Class: It exemplifies the extreme wealth of certain passengers aboard the Titanic and serves as a stark contrast to the poverty of third-class passengers like Jack. 2. Love and Sacrifice: When Rose allows Jack to draw her wearing only the necklace, it becomes an intimate symbol of their love. Later, as Rose retells her story to a team of treasure hunters, it symbolizes the sacrifice she made to be with Jack, even though it was only for a short time. 3. A Link to the Past: At the end of the movie, an elderly Rose is revealed to have kept the necklace all her life. Her final act related to the necklace serves as a closure for her experiences and a release of the past. While the "Heart of the Ocean" is a purely fictional element, the movie's success did lead to real jewelers crafting replicas of the necklace, and a similar design was even auctioned off for charity. The film's portrayal of the necklace has made it an iconic piece of cinema history and contributed to the romantic and tragic narrative that has made "Titanicum" a timeless classic.