Generally there are two types of stones available in the market first is precious stone and second is semi precious stone. Precious stones are much more expensive then semi precious. Both of them are natural stones and are found hundred feet under the earth’s crust. Semi precious jewelry is made of stones which are firstly mined and then furnished for some work. These stones are perfectly cut in shapes and then polished and then lastly they are completely ready to be used. Generally these stones are being estranged by its hardness. It depends on the stone’s gratitude that whether it is soft or hard.