When you look at the old books of the English mineralogists, there are numerous examples of this sharply crystallized copper species that was worth more than its weight in gold to the great collectors of the day. The best in the world came from Cornwall in the early to mid 1800s, and today that is still true with few exceptions. This is a classic example of those antique finds, certainly very old. It is pristine and complete 360 degrees, and a rare cluster rather than just a single. From the award-winning thumbnail collection of Sharon and William Panczner, author of the book Minerals Of Mexico, and last seen and exhibited in the 1960s. Fine on either side!