This Specimen has been sold.
2.55" Polished, Banded Bahia Agate - Brazil
This is a richly colored piece of banded Bahia agate that has been polished to a glossy finish on one side. This specimen was collected from the State of Bahia, Brazil and features a variety of agate color hues including orange and red.
Agate is a variety of microcrystalline quartz (chalcedony) that displays translucence and in some cases banding. Agate primarily forms when silica-rich fluids fill pockets within rock and/or fossils, resulting in deposition of the silica along the walls of the rock. This process can result in banding patterns as the composition and impurities of the fluids change over time. These banding patterns can either form as flat layers or rounded layers, depending on the surfaces available for deposition.