A gemstone also called a gem, fine gem, precious or semi-precious stone have garnered a lot of fame for its exceptional beauty or because of its size. Gemstones are used all over the world to make fine jewelry because of their exceptional luster and unparalleled beauty. There are numerous factors which are used to classify gemstones including their hardness, color and translucency. Jadeite, red diamonds and serendibite are the top three most expensive gemstones in the world in terms of cost. Jadeite which is believed to be the most expensive gemstone in the world can cost a whopping 2,214,000 GBP per carat. To know more about the most expensive gemstones in the world, visit the link that is given below.