Hard to capture on camera, but these sharp, scalenohedral calcites (to 3 cm) are dusted with bright pyrite microcrystals to create a big, dazzling Russian showpiece. A couple of tip dings, but hard to notice on a specimen such as this. very ATTRACTIVE and, even in the midst of tonnes of minerals, unusual for russia. 11.8 x 6.8 x 5.2 cm