This is a fantastic copper specimen with heft, aesthetics, and dramatic display. As a bonus, though, we get a Copper-included Calcite crystal attached to it - which is quite uncommon. Copper in Calcite from Michigan is one of the great American classics, and good ones are far and few between. The main Calcite crystal here is a full 2 cm tall, included by bright, shiny Copper. The Calcite is totally gemmy, and has a lustrous, watery surface that is so good it actually distracts from the interior. I haven't seen many Calcites with Copper exactly like this. These Copper crystals range up to 2 cm, and their form, sharp to rounded, is highly varied so you get several different crystal habits in one single specimen. The Copper is distinctive and distinguished in its own right, but together this combination is crazy unusual and special! Complete all around, this is a significant cabinet piece for old Michigan copper.