Rock Crystal Roll-on Description of the Roll-on Rock Crystal This roll-on is composed of a glass container with a stone ball tip and the small polished rock crystal stones it contains. The assembly is closed by a metal stopper that protects the ball from possible scratches or impacts but at the same time prevents any leakage of its contents. Roll-on is intended for the use of stones applied to the skin after immersion in a liquid. The unscrewable tip allows you to run the liquid of your choice inside the roll-on, in direct contact with the stones. You can thus let your product absorb the energies of the stones for a while and then benefit directly from the restitution of the benefits of rock crystal through its application to the skin. For example, it is possible to combine the benefits of stones and those of aromatherapy if you decide to place a synergy of essential oils.