BST121pr Blue Star Thunderegg Specimen Pair Black Tourmaline This small nodule could have

This small nodule could have been part of a larger piece

Typical size ranges from about 1 to 7 lb pieces

This small specimen pair displays orange

This polished specimen features translucent

The inside can have fine little crystals called druzy

BST121pr Blue Star Thunderegg Specimen Pair Black Tourmaline This small nodule could haveThese polished halves of a large Blue Star Thunderegg show two sections of open chalcedony cavities coated in sparkling crystal druzy, surrounded by translucent agate with pale blue feathery banding. The rest of the egg is made from gray and brown rhyolite, with patterning similar to petrified wood that radiates outward from the agate. The chalcedony shows green fluorescence under 365nm ultraviolet light. Polished Surface: 12. 2cm x 7. 4cm and 12. 2cm