The crystals are made of natural transparent quartz (rock crystal). Rhinestone is a mineral, natural silicon dioxide, a colorless, transparent variety of quartz, one of the crystalline modifications of silica (SiO2).
Crystals of different sizes are available, photos will be sent on request.
Crystals other stones and minerals can be viewed here
www.livemaster.ru/brand/allgoods/mirmineralov?cid=785363
Rhinestone is used as a harmonizer, Reiki sessions, etc.