CMT152 Cold Mountain Thunderegg Specimen From Mexico A mottled white

A mottled white

Tiny dark brown speckles of dendrites are visible going back into one of the layers

quicken ones intellect

A polished specimen featuring creamy yellow

white and light blue-gray agate

CMT152 Cold Mountain Thunderegg Specimen From Mexico A mottled whiteThis polished specimen displays tan, yellow, reddish brown, and blue gray, with four different sections of chalcedony with swirly banding. 5" x 3. 25" x 1. 5" 11 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