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which was used to mark its high grade in the rough
The dark blues and greens in this layer are much crisper and detailed
The plumes lay in pale blue-gray and pale yellow chalcedony with little pockets of druzy
which have little centers of blue-gray
BST104pr Blue Star Thunderegg Specimen Pair Moons which was used to markThese polished halves of a Blue Star Thunderegg show cavities with botryoidal chalcedony coated in sparkling crystal druzy, inside feathery banded agate in clear to pale blue hues. The rest of the egg is made up of brown rhyolite surrounding the agate and chalcedony, with a few distinct star points extending to the edges. The chalcedony shows green fluorescence under 365nm ultraviolet light. Polished Surface: 8. 3cm x 5. 2cm and 8. 4cm x 5. 4cm
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