BST120 Blue Star Thunderegg Specimen Tumbled Stone blue goldstone's color is created

blue goldstone's color is created by using cobalt instead of copper (used in goldstone) combined with molten glass

The main lap is constructed from high quality steel

and dark blue-green jasper with some partial

1” arbor hole diameter

bright red-orange

BST120 Blue Star Thunderegg Specimen Tumbled Stone blue goldstone's color is createdThis polished Blue Star Thunderegg shows brecciated rhyolite filled with translucent agate with gentle feathery bands in white to pale blue. The surface is scattered with tiny open vugs that reveal hints of crystal druzy. The chalcedony shows green fluorescence under 365nm ultraviolet light. Polished Surface: 9. 5cm x 5cm Approx. 1. 25" deep 5. 6oz Blue Star Thundereggs are a recent find out of Sonora, Mexico. They have a dark grayish to reddish brown