10.1" Polished Medicine Bow Agate Slab - Wyoming

This is a gorgeous, 10.1" wide, polished slab of Medicine Bow agate from Wyoming. It has been cut flat on both sides and polished to a glossy-finish on one. The plumes are black-brown in color and have been encapsulated in white-colorless agate.

It comes with an acrylic display stand.

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.
Chalcedony var. Agate
10.1 x 5", .3" thick