POL137JR Polyhedroid Agate Specimen
This polished Polyhedroid Agate specimen features alternating bands of crystal and agate, in translucent, blue-grey, which open to a crystalline vug in the center.
6.3cm x 4.1cm polished surface, 4.2cm deep
2.6oz
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 occasionally feature multiple "chambers" where those blades eroded and adjacent agates fused together.
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Description
This polished Polyhedroid Agate specimen features alternating bands of crystal and agate, in translucent, blue-grey, which open to a crystalline vug in the center.
6.3cm x 4.1cm polished surface, 4.2cm deep
2.6oz
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 occasionally feature multiple "chambers" where those blades eroded and adjacent agates fused together.
