Natural diamonds are precious gemstones formed deep within the Earth over billions of years. They are created under extreme heat and pressure, transforming carbon atoms into a crystal structure. These diamonds are mined from various locations around the world, including South Africa, Russia, and Australia. Natural diamonds are valued for their beauty, rarity, and durability. They are commonly used in jewelry, particularly in engagement rings, due to their brilliance and sparkle. The quality of a diamond is often assessed using the Four Cs: cut, color, clarity, and carat weight, which help determine its overall value.