This pin is in the shape of a Greek cross with equal length arms or a St. George's cross. The plate is likely Sterling silver but there are no markings. The silver is elaborately engraved. Five agate cabochons in shades of cream, rust and brown, some banded some not, are bezel set. In between, are four 1/2 pearls, also bezel set along with 4 bezel set tiny pink/red stones. Back of the frame has been hand cut with openings for the agates. There is a tube hinge and a c clasp. 1 3/4" long. 1 11/16" wide