This fantastic cluster of four Herkimer diamonds (plus one tiny accent diamond!) is water clear and a complete floater. There are a few interesting inclusions of black hydrocarbon in the nearly flawless crystals. The largest crystal is 25 mm long, and the whole group measures 17 x 25 x 39 mm. I love the fact that the careful collector of this specimen took the time to find and re-attach even the tiny crystal in back.