Incredible deep blue color.  For insight, psychic attunement, enhancing clairvoyance and ability to "read" people and situations
This mineral can be used to eliminate the feeling of abandonment and restraint and to assist one in continuing toward ones goals without confinement. It has also been used to assist one in the selection of choice - the energy of Chalcanthite tends to reflect the choice of preference which will further ones objectives and desires
Warning:  Seductive blue chalcanthite crystals are composed of copper, combined with sulfur and other elements and water. This arrangement turns copper, which is required by the body but toxic in excess quantities, into an extremely bio-available crystal. In another words, the copper becomes water soluble, and may be assimilated in great quantities by any plant or animal, rapidly weakening it and then killing it by shutting down body processes. Chalcanthite should never be taste tested by amateur scientists for salt content, or an extremely serious overdose of copper could result. Just releasing crystals of the blue mineral has killed entire ponds of algae, and posed great environmental threats. Because of the incredible beauty and rarity of chalcanthite, an enterprise dedicated to growing artificial crystals and passing them off as genuine specimens for sale has developed within the geological community.  One of the 10 most deadliest stones in the world listing