2.9" Polished Blue Lace Agate Sphere - Ysterputs Mine, Namibia

This is a polished sphere that was shaped from blue lace agate collected from the Ysterputs Mine in Namibia, Africa. The blue coloration of this specimen is truly wonderful and vibrant. This material comes from chalcedony veins formed by hydrothermal deposition within large cracks in the Karoo Whitehill Formation and surrounding metamorphic, sedimentary and igneous formations. Many of these cracks can be attributed to a fault that runs through the area.

Comes with the pictured 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 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.

Quartz var. Chalcedony
Ysterputs Mine, Namibia, Africa
2.9" in diameter