The round brilliant platinum wedding ring is by far the most popular shape, and accounts for about 3 out of 4 diamond stud purchased today.
But diamond fashion is distinctly different from its close cousins the common mineral graphite and lonsdaleite, both of which are also composed of carbon.
engagement rings in jewelry are the most popular of all gemstones. Their price and rarity is carefully monitored by the major diamond cartels. As a result the price of diamond stud in jewelry is pretty well standardized to size and quality of the stone.