Art Nouveau Bands, Diamond Leaf Ring The diamond is the birthstone for April. Its origin derives from the Greek word "adamas," meaning unconquerable and indestructible. The Greeks believed the fire in the diamond reflected the constant flame of love. For the last 3000 or 4000 years, diamonds have symbolized wealth, power, love, spirit and magical powers. It was believed that diamonds were fragments of stars and the teardrops of the gods.