It is set in 925 silver

and an article on how to cleanse your crystal here

The ring size is O

Regularly meditating near an Apophyllite cluster is thought to assist in stress reduction and mental clarity

and emotional healing during the night

Aquamarine and Mica Crystal Chunk (Large) Lapis Lazuli It is set in 925Weighing in at 1. 65KG this fantastic natural aquamarine crystal raw chunk feels really fantastic to me! It is so beautiful with silver mica scattered through the rock (and a little muddy in places) , don't expect perfect edges, this is a wonderfully organic one straight from the Earth! This beautiful natural crystal chunk of Aquamarine measures about 10cm long x 10cm wide x 8cm deep. Please double check the size and the photos before you buy.