A truly breathtaking roseate spray of "cockscomb marcasite" from the Old TriState District. This one has the most incredible iridescence and multicolored patina I have ever seen on a marcasite. It is a complete rosette, too, and displays magnificently. For an oft-dismissed species like marcasite, this is a real stunner. 6.9 x 5.9 x 3.2 cm