Fancy Brown Diamond The Color Of Nature The most abundant colored diamond is the Brown Diamond which, like all diamonds comes from beneath the ground in the heart of mother earth. Most were and still are, used in industry. The Brown Diamond is formed using a method utilizing High temperature and High pressure (also known as HPHP). The Chocolate or Natural Brown Diamond is unique and beautiful and therefore used by a lot of jewelry designers using the Brown Diamond in their jewelries.  If you choose the Brown Diamond carefully you could have a magnificent piece of jewelry that everybody will envy.