Idocrase is a rare gemstone that rarely occurs in gem quality, which usually shows a beautiful greenish color with brown or yellowish tones, although the most common occurs such opaque material, the highest quality is transparent and translucent. It has a good shine, something fatty, very similar to jade, a hardness of 6.5 on the Mohs Scale and although until recently it was a gem of collectors, it can be seen mounted on beautiful pieces of jewelry. Another name by which it is known is Vesuvianite.