Silver pin marked "800" (i.e. 800 Silver). Oval made using cannetille work with a center stone very likely Chrysoprase; a green variety of chalcedony. This sort of work was very popular in the 1820-30s. Long tube hinge, and early form of the safety clasp. Thick pin. Hand-made pin, reflecting "peasant" or "folk" jewelry. 1 3/4" wide 1 3/16" long