This BIG smithsonite specimen has the most unique color and luster - not surprisingly, since it is not from Choix, where the vast majority of Mexican smithsonites have come from in both old and new mining there - but from Sierra Mojada, where Benny Finn (always scouring Mexico for new material) acquired it, and sold it to Dave Stoudt in 2002. The luster is shimmering and pearly, and the color is a beautiful light pastel sea-foam green - gorgeous! This is a thick crust of solid smithsonite.