This good sized A grade Herkimer Diamond crystal has two terminations in good condition: one might appear to be damaged, but close inspection shows this is merely layering to one of the faces, where it has become detached from another crystal. There is also a nice key to one of the other faces, and to one side. The crystal is slightly milky but reasonably clear, other than in the very centre of the crystal where there is internal fracturing with veiling and some nice rainbows. There are also some patches of small platy black inclusions, probably anthraxolite, on and below the surface.
Size 2.5 x 2 x 1.5 cm