This cut slab from a thunderegg is polished on both sides and has a blue-gray chalcedony center surrounded by thin bands of white, gray, brown, and yellow agate. The banding follows the edges of the center, with the natural volcanic rock still surrounding it. Under 365nm UV light, the stone fluoresces green. Both sides have been polished to reveal the beautiful interior.
Size: 2 ½ in
Weight: 2.6 oz
This cut slab from a thunderegg is polished on both sides and has a blue-gray chalcedony center surrounded by thin bands of white, gray, brown, and yellow agate. The banding follows the edges of the center, with the natural volcanic rock still surrounding it. Under 365nm UV light, the stone fluoresces green. Both sides have been polished to reveal the beautiful interior.
Size: 2 ½ in
Weight: 2.6 oz
