BST102pr Blue Star Thunderegg Specimen Pair Polyhedroids " The cracks vary in

" The cracks vary in shape and volume

Rainbow fluorite is the name given to fluorite that exhibits more than one color

Approximately 2" base

featuring naturally flat surfaces at a variety of different angles

or sometimes a deep blue that appears black

BST102pr Blue Star Thunderegg Specimen Pair Polyhedroids " The cracks vary inThese polished halves of a Blue Star Thunderegg show botryoidal chalcedony coated in sparkling crystal druzy, inside feathery banded agate in clear to pale blue hues. The shape of the chalcedony comes to several pointed edges like a star, with brown rhyolite making up the rest of the egg. The chalcedony shows green fluorescence under 365nm ultraviolet light. Polished Surface: 6. 6cm x 5. 5cm and 6. 8cm x 5. 6cm Approx. 1" and 1. 5" deep 9. 1oz Blue