Size 10,5 x 10 x 3.5 cm - 415 grams Εxcellent rare specimen Silver Smithsonite In Manganese, a specimen of perfect purity rare quality very shiny Silver means the color of Smithsonite. These specimens are a rare and stand out for their shiny silver color. From ''Hilarion'' Mine, Agios Konstantinos, Lavrio Mining District, Lavreotiki, Eastern Attica, Greece will be sent with a security number The mineral was known until the last century with the name Kalamina, a name that was also used for Hemiformite, a fact that brought some confusion. In 1802, however, the miner James Smithson distinguished him and separated him from the Hemiforms and honorably took his name. Known since antiquity in Lavrio and Thassos in Greece