Sapphire is a precious gemstone known for its striking blue color, though it can also come in a variety of other hues, including pink, yellow, green, and even colorless. It is a variety of the mineral corundum, which is second only to diamond in hardness, making it highly durable and resistant to scratches. The blue color of sapphires is caused by trace elements of iron and titanium.

Sapphires are often used in jewelry, such as rings, necklaces, and earrings, and are a popular choice for engagement rings. The most famous sapphire is the "Star of India," a massive stone weighing over 500 carats. Sapphires are also considered to be symbols of wisdom, virtue, and good fortune in various cultures.

In addition to their aesthetic appeal, sapphires have been historically valued for their believed spiritual and healing properties. They are thought to promote mental clarity, calmness, and self-discipline.