Sapphire is a precious gemstone known for its striking blue color, though it can also occur in a variety of other colors, such as yellow, pink, and green. Chemically, sapphires are a variety of corundum, which is composed of aluminum oxide with trace elements that give them their color. The most well-known sapphires are blue, caused by trace amounts of iron and titanium, and their color can range from pale to deep blue.

Sapphires are highly prized for their hardness (9 on the Mohs scale) and durability, making them ideal for jewelry. Historically, they were believed to symbolize wisdom, nobility, and divine favor. They are often associated with royalty and are frequently used in engagement rings and other fine jewelry pieces. Sapphires are typically found in countries like Sri Lanka, Myanmar, Thailand, and Madagascar.

In addition to their beauty, sapphires have been historically regarded as stones of protection, thought to bring peace and mental clarity to their wearer.