These are old classics dating from befor e1850 I am told, and this is one of the larger such hoppered crystals I have seen for sale out there. It is exquisitely well formed, symmetric, and has a wonderful green alteration patina atop the cuprite. The Benjamins collect for aesthetic quality, not size or price range, so you can see why it was a special piece to them (especially as French collectors, since it is so hard to find these in so nice a display quality!)