A very large, very impressive and quite beautiful Michigan copper, with distinct, large crystals, gorgeous branching forms, and an antique patina that accents it in many areas. Both sides of the specimen are quite fine! Weighs over 2 pounds (almost a kilo), so a really substantial specimen to have such graceful form! It is, I will say, BETTER In PERSON 17.2 x 10.7 x 2.5 cm