Quartz and galena, Madan, Bulgaria
Beautiful architecture for this specimen associating quartz...
Beautiful architecture for this specimen associating quartz...
Plate of bright red sphalerites associated with small...
Association of striated bournonites and sphalerites of a...
Group of galena crystals with a nice metallic luster sprinkled...
Specimen combining sphalerite var. cleiophane of beautiful...
Ilvaite in small, well-formed, relatively bright millimeter...
Miniature composed of brilliant and intact crystals of...
Colorless fluorite with multiple truncations, nevertheless...
Old piece composed essentially of a large calcite crystal (7 x...