5.5" Polished Wyloo Agate Slab - Australia

This is a gorgeous slab of Wyloo agate from Western Australia. It has been cut into a slab and polished to a mirror like finish revealing some very interesting geometric patterns. Wyloo agate, also known as Ashburton agate, was formed about 900 million years ago when silica-rich solutions entered the 2 billion year old dolomite host rocks after a major tectonic event. This resulted in agate formations and pockets of quartz crystals.

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
Near Ashburton River, Wyloo Station, Pilbara Region, Western Australia
5.5 x 3.4", .3" thick