Corrected entry: The diamond in the film, "La Coeur de la Mer," is supposed to be a diamond owned by Louis XVI and lost during the French Revolution, which Lovett refers to also as the "Blue Diamond of the Crown." In one early scene Lovett mentions to Rose that "Today it would be worth more than the Hope Diamond." This is impossible: the diamond of which he speaks is in fact the Hope Diamond, which was also owned by Louis XVI, lost during the French Revolution, heart-shaped, and known as the Blue Diamond of the Crown while owned by the French monarchy. The two stones are one and the same. Also, the Hope was recut sometime in the early 19th century to its present oval shape, so that it had lost its heart-shaped form a century before Titanic sailed; this makes "The Heart of the Ocean" something of a misnomer. Needless to say the Hope Diamond was never on board Titanic, and is now lodged safely in the Smithsonian rather than lying at the bottom of the ocean. (00:44:50)
J I Cohen
27th Aug 2001
Correction: I've scoured the internet, and I can see no evidence that the Hope Diamond was ever called 'La Coeur de la Mer' (see http://www.si.edu/resource/faq/nmnh/hope.htm, and many other sites). The Hope Diamond was known as both the "Blue Diamond of the Crown", and the "French Blue". I think the filmmakers were inspired to make that into two diamonds: the real one, which is now the Hope diamond (the "French Blue"); and the fictitious 'La Coeur de la Mer' (the "Blue Diamond of the Crown").
J I Cohen