Not your average cobalt signal

By Michael Green; posted April 25, 2017

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On the left is a rare and beautiful dark cobalt peacock CD 162 H.G.Co. compared to a much more common dark cobalt Hemingray-19 on the right. If I remember correctly only five of the cobalt peacock CD 162 H.G.Co.'s are known and they were all found in Michigan. View original for a more detailed view