CMT163pr Cold Mountain Thunderegg Specimen Pair Onyx The triple layer frame perhaps

The triple layer frame perhaps has the most contrast in the whole piece

They show a mix of light to dark grays

you may add the Variable Speed Motor

and known as "the king" of picture jaspers because of its depictions of mountain or desert scenery

Please Note: The pieces of copper photographed are representative of the material and may not be the exact  pieces you receive

CMT163pr Cold Mountain Thunderegg Specimen Pair Onyx The triple layer frame perhapsA polished Cold Mountain Thunderegg specimen pair featuring streaked jasper in sandy to reddish brown shades with brecciation filled with translucent chalcedony. Each half of the pair has a full back, with different depths. Polished faces: 7. 5cm x 5. 5cm and 7. 4cm x 6cm Approx. 1" & 1. 5" deep 12. 5oz together Cold Mountain Thundereggs are from the Sierra Mountains in Mexico. The thundereggs can contain water banding and feature red, mauve, or black