Yellow sapphires have been prized gemstones for thousands of years. They are a variety of the mineral corundum, and like all sapphires, they are composed of aluminum oxide with trace elements that give them their distinctive color.

Yellow sapphires are also associated with various cultures and traditions. In ancient Indian Vedic astrology, the yellow sapphire is considered to be a powerful gemstone for attracting wealth, good fortune, and prosperity. It is also believed to have healing properties and is said to help with digestion, liver ailments, and other health issues.

One of the most famous yellow sapphires in history is the one known as the "Star of Bombay." This 182-carat gemstone was mined in Sri Lanka and was purchased by Hollywood actress Mary Pickford for her husband, Douglas Fairbanks, in 1934. The gem was later acquired by John D. Rockefeller Jr. and donated to the Smithsonian Institution in Washington, D.C.

Another famous yellow sapphire is the one known as the "Golden Jubilee." This enormous gemstone weighs 545.67 carats and is the largest faceted diamond of any color in the world. It was cut from a rough stone that was originally discovered in the Premier Mine in South Africa in 1985. The Golden Jubilee is now part of the Thai Royal Family's Crown Jewels.

Other famous yellow sapphires include the 65.51-carat Logan Sapphire, which is also part of the Smithsonian Institution's collection, and the 70.19-carat Murari-Mrinalini Sapphire, which is on display at the American Museum of Natural History in New York City.

Overall, yellow sapphires have a rich and fascinating history, and their beauty and rarity have made them highly prized by gem collectors and enthusiasts around the world.