Details: A variety of chalcedony. Relieves stress. Balances male/female polarities. Strengthens bone marrow. Aids detachment. Enhances emotional balance and self-control. Higher inspiration. It works with Chakra and attitudes according to color of stone. It is used for protection as well as defense against negativity consciously directed towards one. It is also used to reduce to reduce the sexual impulses. In times of risky sexual contact perhaps onyx can be used to help curb uncontrollable sexual urges.These are not Gems therefore, size does not matter. These crystals are natural and shape only had been given. They really work if one keep positive attitude. Our skin is soluble and it absorbs minerals from the crystals. The combinations of these minerals react with body and help in curing disease. These crystals are natural and shape only had been given. These have no side effects as nothing is intake and apart from this couple of members suffering from the same disease can also use.