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

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

The magnificent Star of India is the world’s largest and most famous gem-quality blue star sapphire. Weighing an incredible 563.35 carats—roughly the size of a golf ball—this milky grey-blue gemstone is a variety of the mineral corundum. Its most striking feature is a phenomenon called asterism, where tiny needle-like inclusions of the mineral rutile reflect light to create a distinct six-rayed star pattern. What makes this specific sapphire truly legendary is that this star is visible on both the top and the bottom of its smooth, cabochon-cut surface, which is extremely rare for such a massive stone.

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