"Pearls are white and diamonds are colorless"
Around the Polynesian islands of the Pacific, there are black pearls, rare and therefore very expensive. Arise from species of oyster called Pinctada Margaritifera. Color diamonds, however, can vary from yellow, blue and red until brown and black. Many of them are looking poorly. Colored diamonds used are considered "fancy diamonds" so that colored diamonds are even more expensive than colorless diamonds.