Look closely, this is NOT cobaltoan calcite. It is cobaltoan DOLOMITE. This is a nice specimen and a good size specimen: it measures 9.5 x 5 x 3.5 cm. The dolomite crystals scattered across the matrix range in size from almost a druse to one centimeter on edge. The faces are somewhat etched. No damage. I see many fewer cobaltoan dolomites than calcites.