Natural diamonds form deep within the Earth's mantle, roughly 150 to 200 kilometres below the surface, where carbon atoms crystallise under extreme pressure and temperatures near 1,200°C. This process unfolds over 1 to 3 billion years. Volcanic eruptions then carry the crystals upward through kimberlite pipes, bringing them close enough to the surface to be mined. This geological rarity gives natural diamonds their enduring value and emotional significance. When choosing a stone, ask for its certificate: it confirms the diamond's natural origin along with its carat, colour, clarity and cut, so you buy your BAUNAT jewel with complete confidence.