HOW MUCH IS TITANIC SAPPHIRE WORTH?  If the Heart of the Ocean were a sapphire instead of a diamond, its value would depend on the quality and size of the stone, as well as the craftsmanship of the setting. A high- quality 56-carat sapphire of a pure, vivid blue color could be worth several hundred thousand to millions of dollars, while a lower-quality stone with inclusions or a less desirable color could be worth much less.  Again, it is important to note that the Heart of the Ocean is a fictional creation and not a genuine historical artifact, so any value assigned to it is purely speculative.