Only 1 percent of the world’s total diamond is colored, which makes these gems a rarity and their value priceless. Among all the colors of diamond found on earth red is probably the rarest and therefore most sought after. There is a collection of only thirty-five exquisite pieces of red diamonds across the world. Found by a farmer from Brazil, the Moussaieff Red diamond weighs 5.11 carats and is the largest red rock in the world.