One very aesthetic cabinet-size specimen of thin, very well-shaped clear quartz crystals, coated by limonite and overgrowth by very lustrous pyrite crystals.
One beautiful cebinet size specimen of clear quartz crystals, overgrowth by chalcopyrite with nice striation and mirror lustrous galena crystals.
Borieva mine, Madan, Bulgaria
One very interesting, strongly weathered, large cabinet-size specimen of black sphalerite-marmatite and quartz, covered by very well-developed chalcopyrite crystals, lately internally corroded and replaced by pyrite.
One very aesthetic cabinet-size specimen of transparent quartz crystals in the upper part covered by limonite.
Hot from the mine! One very aesthetic specimen of sphalerite, chalcopyrite, and pyrite overgrowth by exceptionally long quartz needles.
An incredible specimen of flat pseudohexagonal spinel law twinned galena crystals, slightly dissolved on the edges, followed by clear quartz crystals, and overgrowth by small spherulites of green chamosite
One superb specimen of rhodochrosite with perfect color, overgrowth by clear quartz crystals, reminding a strange animal head.
A very rare, cabinet-size specimen of flat calcite crystals „paperspat“ overgrowth by pink rhodochrosite and followed by perpendicularly on the base clear quartz crystals.
A very aesthetic cabinet-size specimen of very lustrous black sphalerite marmatite crystals, overgrowth by clear rock crystal.