Whether worn as a statement piece or kept as a valuable investment, yellow diamonds are sure to bring joy and beauty to those who appreciate their unique allure. Diamonds are one of the most precious and sought-after gemstones in the world. They are formed deep within the Earth's mantle under extreme heat and pressure, making them incredibly rare and valuable. The process of diamond formation is a fascinating journey that begins millions of years ago and involves a complex series of geological events. In this comprehensive guide, we will explore how diamonds are made, from their initial formation to their journey to the Earth's surface and eventual discovery by humans.