The Star of India is a famous blue star sapphire, weighing approximately 563 carats. It is known for its remarkable asterism, which creates a star-like pattern on its surface when viewed under light. This gemstone is one of the largest of its kind and is housed in the American Museum of Natural History in New York City. Discovered in Sri Lanka, the Star of India was mined in the 19th century and later acquired by the American gem collector J.P. Morgan. The gem has a rich history, including a theft in 1964, but it was recovered and remains a significant attraction for visitors interested in gemstones and natural history.