Galena, which is a silvery-gray mineral that is composed of Lead Sulphide, is the primary ore of lead, and is also one of the commonest sulphides in the Earth's crust. It is very soft, and demonstrates perfect cleavage in four directions, producing either cubic or octahedral crystals. It also occurs in granular and massive forms, often in association with calcite, cerussite, dolomite, pyrite, or sphalerite. The galena found in some locations has a relatively high silver content, making it the main commercial source of silver. Fine specimens are well regarded by collectors, especially where there is a good combination of luster (which is metallic to dull) and crystal shape. This mineral has a gray streak.
These tumbled galena stones are not the world's prettiest faces, but with the properties they bring, they are definitely worth having one or two of in your crystal healing kit.