A massive specimen pale green smithsonite growing an inch thick on a nondescript piece of grayish-brown rock. Weight is approx. 1-3/4 pounds, and the total size is approx. 5 x 3 x 3 inches. It appears to have had some abrasions as it was handled, but nonetheless, this will be an eye-catching display piece on your desk or bookshelf that can be enjoyed by all ages. Smithsonite is a zinc carbonate named in 1832 by FranÃois Sulpice Beudant for English mineralogist and chemist James Smithson, who identified the mineral in 1802 and bequested his estate to establish the Smithsonian Institution in 1835. State: City: Date: