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Pulse arcade — neon hairlines and corner brackets frame the playfield brief.
created in collaboration with the Smithsonian Institution and written and edited by dozens of scientific professionals with decades of experience
This specimen features a dark purple-gray chalcedony in small orb formations
and pale yellow banded agate
INT174db Intarsia Drilled Bead features a center of birdseye rhyolite that creates an abstract landscape
Expertly written and thoroughly vetted
POL251pr Polyhedroid Agate Pair Miscellaneous created in collaboration with theA small polished Polyhedroid Agate specimen pair featuring quartz filling. Left: 2" x 1" x 0. 75" RIght: 1. 75" x 1" x 0. 5" Total weight: 0. 1 lbs Polyhedroid Agates were found in Paraiba, Brazil, but are now unavailable. They are a unique formation of agate, featuring naturally flat surfaces at a variety of different angles. They are believed to have formed in the negative spaces between large crystal blades of calcite or aragonite, and can