Lake Superior Agate LSA49
John Marshall, author of The Other Lake Superior Agates, examined this agate and had
this comment, "This specimen exhibits a classic "Included Crystal" group. This is a
preexisting quartz crystal grouping that formed in the cavity that the eventual Lake Superior
Agate would also occupy. These water clear crystals were preserved by the surrounding
agate. Without the support of the agate, the crystals would have been destroyed when the
host rock was weathered. A very fine specimen that also includes amethyst." This agate
was opticon coated when I got it. I've removed all the opticon and treated it lightly with
mineral oil. Weighs 1 pound, 2.6 ounces. Measures 3 1/4 x 2 5/8 x 2 3/8 inches. $175
