A stunning and very unusual "windowpane" fluorite from Elmwood, from a weird pocket where the solution etching effects common at the mine have worked only around the edges, leaving a bright and gemmy core with SHARP faces that is also window-clear, so you can look right through the crystal. The combinaiton of sharp, hard lines on the top half of the crystal fading subtely to etched edges and softer edges on the other sides, is very aesthetic. The color also subtely changes from yellowish to lavender throughout. It is a really complex specimen, though at first glance it look slike just a simple single crystal. It is a floater, technically complete (due to microcrystallization on the back) all around. In person it is very transparent, and gemmy! One of the most unique single fluorites from here, overall, that I have seen. I was happy to exchange this from Jack Halpern's collection recently. He got it about a decade ago from the Cliff Krueger collection.