Brown Diamond is a naturally occurring variety of diamond, composed entirely of carbon with the chemical formula C. It belongs to the native element mineral group and crystallizes in the cubic (isometric) crystal system. Brown diamonds are formed deep within the Earth under extreme pressure and temperature, similar to all diamonds. Their brown color is primarily caused by structural distortions in the crystal lattice rather than impurities. Brown diamonds can range in color from light champagne tones to deep chocolate brown. These stones are often marketed under trade names such as “Champagne Diamonds” or “Cognac Diamonds.” The intensity and uniformity of the color greatly influence their value. Unlike traditional colorless diamonds, brown diamonds offer a unique and earthy appearance that has gained popularity in modern jewelry designs.