2.25" Colorful Sinbad Agate Nodule Half - Utah

This is a colorful agate nodule featuring red, purple, and yellow hues, referred to as "Sinbad agate". It comes from the same formation as greasewood draw agate, Utah grape agate, tin can flat agate, and Chinese lace agate, all produced from multiple exposures across Emery County, Utah. It has been cut flat along one face and polished to a glossy finish.

The pictured half of the nodule is included along with a 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
Emery County, Utah
2.25 x 1.7", up to .9" thick