These are medium to dark green specimens, most with nice crystal structure. They are not gem quality but make a nice addition to any mineral collection. From Brazil, South America. Dolomite Rock is used for decoration, as a building material, and for extracting certain metals from the ore. For instance, it is used in the preparation of magnesium salts.
Dolomite is used to make magnesia.
Dolomite crystals commonly form in groups of small, pink, rhombohedral crystals with curved, saddle-like faces. Some with calcite and marcasite cubes. M154 Pink Dolomite specimens Same pearl spar as above but smaller. This is a large museum quality specimen that weighs 27 lbs. A rare piece.