CMT158 Cold Mountain Thunderegg Specimen Copper and white banded agate with

and white banded agate with quartz and druzy center

All of the cabs shown are cut and polished by hand in our lapidary shop in Cedarburg

From Agouim

Between 11 mm and 20 mm long

CMT158 Cold Mountain Thunderegg Specimen Copper and white banded agate withA polished specimen featuring reddish brown, dusty peach tan, and translucent, blue gray chalcedony filling the thunderegg fracture pattern. 3. 75" x 3" x 2" 13. 1 oz Cold Mountain Thundereggs are from the Sierra Mountains in Mexico. The thundereggs can contain water banding and feature red, mauve, or black webbing. While technically a rhyolite due to its thunderegg nature, Cold Mountain Thundereggs are highly silicate and feature large amounts of