Sapphire is a precious gemstone known for its stunning blue color, although it can come in a variety of hues, including pink, yellow, and green. It is a variety of the mineral corundum, which is composed of aluminum oxide. The blue color of sapphires is typically caused by traces of iron and titanium in the crystal structure. Sapphires are extremely durable, with a hardness of 9 on the Mohs scale, making them second only to diamonds in terms of hardness.

Sapphires are highly valued for their clarity, brilliance, and rich color. The finest sapphires are typically a deep blue, though lighter shades can also be prized. These gemstones have been used in jewelry for centuries and are often associated with royalty and wisdom. They are also believed to have spiritual significance, representing purity and wisdom in many cultures.

Sapphires are found in various parts of the world, including Sri Lanka, Myanmar, Madagascar, and parts of the United States, such as Montana. They are commonly used in rings, necklaces, and earrings, as well as in watches due to their scratch-resistant properties.