Diamond, the birthstone for April and is the hardest of all stones ,a 10 on the Mohs scale. Diamond can be colorless , yellow, blue, red, green , champaigne, brown, and black.Many of the colored stones are created in labs,and usually cost much less than their natural counterparts. The pure colorless, free of all inclusions and surface blemishes can command very high prices due to the rarity of such stones. Diamond is graded on cut, clarity, color , and carat weight. Ideal proportion in cutting diamond is crucial to bring out the best brilliance in the stone.D is the top color in colorless stones and the stones become noticeable grayer as the stone goes down the alphabet. Diamond is the hardness of all gemstones so it can be worn daily without much worry. Diamond has been treasured since antiquity, and was a symbol of success and wealth. Diamond is a energy stone, and brings courage, fortitude, mental health, and consistency in love and friendship.