24x M Tumble Stone - Peruvian opal

Natural opals are non-crystalline, hydrated silicon dioxide stones that contain up to 30% water. Opals can dry out and crack and are relatively soft and brittle. Opals are found in veins and cavities of igneous or sedimentary rocks. 

It is said that opal can stimulate creativity and help people enjoy life. The stone has been linked to the sacral chakra, the imbalance of which can cause addiction problems. European cultures have long believed that opal is a symbol of hope, purity and truth.