Galena var. Spinel Law Twinned with Sphalerite on Quartz from Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria. Galena var. Spinel Law Twinned with Sphalerite on Quartz from Krushev dol Mine, Madan Municipality, Smolyan Province, Bulgaria, represents a collector's masterpiece. The specimen showcases exceptional spinel-law twinned galena crystals exhibiting complex interpenetrating cubic forms with brilliant metallic luster, dramatically contrasted by lustrous black sphalerite crystals and sparkling quartz points on matrix. From the historic and mineralogically rich Krushev dol Mine in Bulgaria’s renowned Madan ore field, this example is highly sought after by collectors for its exceptional crystallography and aesthetic appeal. The specimen’s pristine condition highlights the top-quality galena form typical for this location, making it a standout addition in any fine mineral collection.