Polka Dot Agate Rough Rock Stone Slab
This Polka Dot Agate rough rock slab is 5 inches long by 3.25 inches wide and it is 5 mm thick.
This unpolished stone slab weighs .20 lb and is shown wet in the first 2 pictures.
This material known as Polka Dot Agate comes from the Priday Agate Beds in central Oregon near Madras.
Agate is a chalcedony quartz that forms in concentric layers in a wide variety of colors and textures.
In this lovely variety the whitish/bluish chalcedony is riddled with hematite dots (polka dots!).