Whether you are a professional or a private individual, choose synthetic opal flat stones in a bag of 250grs Description of the flat stone Synthetic opal in 250grs Synthetic opal belongs to the family of minerals with no crystal system. They consist of silicon oxide and other inclusion with various elements. Reasonably strong, synthetic opal is between 5.5 and 6.5 on the Mohs scale. Translucent to transparent in color, synthetic opal is a sumptuous mineral stone that has many powers in lithotherapy both mentally and physically. It is therefore used a lot for this purpose but also for making jewelry. Many ancient civilizations already used it to protect themselves and to elaborate elixirs with, be it the Egyptians, the Romans, the Greeks, the Celts etc. It is an anchoring stone that helps relaxation and can serve as a protection in your life.