Celestite

Celestine, also spelled celestite, is a strontium sulphate mineral, SrSO4, and Wikipedia says its name comes from the Latin caelestis, meaning celestial. The International Mineralogical Association accepts celestine; celestite is common in the mineralogical literature but is not the approved name. Wikipedia gives its colour as white, pink, pale green, pale brown, black, pale blue, reddish or greyish. Cunningham calls it receptive, ruled by Venus, Neptune and the element water, and says it is worn or carried to create eloquence, promote compassion for the Earth and relieve headaches and tension. Hall gives blue, yellow, red and white, associates it with peace, angelic contact, clairvoyance, dream recall, creativity, communication and clarity, says it reveals truth, and advises keeping it out of direct sunlight, where the colour fades. These uses are the authors' claims.