Gem Sphalerite on Dolomite

This is a Gem Sphalerite on Dolomite from Penfield quarry, New York. It has a what I would call a twin with two lustrous

crystals and some orange color in them and complete terminations. The Dolomite is bright white with no damage except

for some roughness around the edges. Ex Donald Zowader Collection. Price on previous label $500. Above price reflects

double keystone off.