These are Pink Opal teardrop pendants from Peru. They are prong set in a sterling silver open back bezel. Each Pink Opal pendant is unique, the size is an average of 22-12mm. Peruvian Opal is actually formed when water gets trapped within quartz. So, it has a natural beauty that is very attractive. The bezel and bail are sterling silver with just a touch of rhodium added to prevent, or at least delay tarnishing. Peruvian opal is said to stimulate creativity and helps ideas flow more freely. It also helps us face the future. If you are looking to improve your psychic ability, it will do that too. Have any old wounds? Well, Peruvian Opal is also known to release the trauma of old wounds. And, to top it off, this stone also aids restful sleep.