A fine calcite on quartz from a one-off pocket at the Borieva Mine, in the Madan ore field, within the Rhodope Mtns., of Bulgaria! This pocket was discovered in late July of 2017, and I acquired the bulk of the find. This specimen features a large, single, doubly-terminated calcite crystal that has formed over small quartz crystals, colored green from chlorite inclusions. The calcite is amber to yellow in color, and is quite interesting, due to the fact that it is a scalenohedral crystal, comprised of hundreds of flattened and stacked rhombohedrons. The specimen is in good condition, with no significant damage.