Lovely Pink Peruvian Opal cabochons. These highly polished disc cabochons measure 18mm. The unusual pink colors of these stones are totally natural. This color is a hard one to find, but we have it for you. Peruvian Opal is actually formed because of water that gets trapped within quartz. So, it has a natural beauty that is very attractive. Peruvian opal is said to stimulate creativity and helps ideas flow more freely. And, to top it off, this stone also aids restful sleep.