Agate Slab - Brazil-cca 455 g-12x11x2,5 cm
This is a   colored piece of banded agate that has been cut flat and polished on both sides. This specimen was collected from southern Brazil and features a variety of colors of agate,Soledade, Rio Grande do Sul, Brazílie.

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 rocks and/or fossils, depositing the silica along the walls of the rock. This process can result in banding patterns, as the compositions and impurities of these depositing fluids change over time. These banding patterns can either form as flat layers, creating linear patterns known as waterline agate, or as rounded layers, forming more common ring-like patterns. These patterns depend on the surfaces available for deposition

Color may vary due to monitor or display settings.