Sisters Jessica Sander and Jen Majkrzak look for agates in a Carlton County gravel pit. Their dad was an avid agate collector whose home is filled with vases, and even a lamp, of agates. He took ...
THIS exquisite image captures the astonishing internal structure of crazy lace agate, also known as Mexican agate. This section of the mineral is some 65 million years old. Agate is related to quartz ...
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