size 100 x 120 x 65 mm -Weght - 921 grams An exceptionally large pure specimen of Conichalcite, the paragon of the species, amazing composition, in the parent rock Limonite From '''Christiana'' Mine, Mercati mines, Agios Konstantinos (Kamariza), Lavrion mining district, Lavreotiki, East Attica, Greece. Conichalcite is an arsenic mineral of calcium and copper. It got its name from the Greek words konis and halkos due to its texture and chemical composition. Due to its frequent coexistence with red-yellow limonite it gives specimens with very beautiful colors, which are sought after by mineral collectors. will be sent with a security number