Lake Superior Agate

Lake Superior Agate hand cut and polished. Set in .925 Silver.

Necklace is 18"

Center stone is approximately 1.50" x 1"

Lake Superior agates formed about 1 billion years ago during lava eruptions in the area now known as Lake Superior. As the lava cooled, air pockets filled with mineral-rich water, depositing layers of chalcedony quartz that hardened together to form agates.