POLKA-DOT JASPER/AGATE CABOCHON, OREGON U.S.A. – APPROX. 24 X 38 X 4.8 MM.

This unusual and attractive Oregon material is a popular classic. Native Americans made arrowheads, knives and decorative objects from it. The “polka dots” are spherules of hematite mixed with other minerals to create unusual and attractive patterns, most often against a bluish-white chalcedony background. This freeform designer cab weighs 26.7 ct. with the measurements above. Low dome, correctly beveled for setting, flat polished back. (All uses, N)