The famous “Star of India” is the largest known example of which type of gemstone? Correct

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The famous “Star of India” is the largest known example of which type of gemstone? Correct

The breathtaking Star of India is the world’s most renowned example of a blue star sapphire. This milky, greyish-blue gemstone is a variety of the mineral corundum and weighs a staggering 563.35 carats, making it roughly the size of a golf ball. Its most striking feature is an optical phenomenon called asterism, where tiny, needle-like inclusions of the mineral rutile reflect light to create a distinct, six-rayed star. What makes this particular sapphire legendary is that the star is visible on both the top and the bottom of its smooth, cabochon-cut surface—a characteristic that is exceptionally rare for a gem of this massive scale.

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