Sapphire is a precious gemstone known for its stunning blue color, though it can also come in other shades like pink, yellow, green, and even colorless. It's a variety of the mineral corundum, which is made of aluminum oxide, and its vibrant blue hue is primarily due to trace amounts of iron and titanium. Sapphires are incredibly durable, ranking 9 on the Mohs scale of hardness, which makes them perfect for fine jewelry. They have a rich history of being used in royal crowns and engagement rings, symbolizing wisdom, loyalty, and nobility. Would you like to know about its different types or uses?