Beautiful piece - measures 1 5/8" across. The outer frame has crystal clear stones - there are 4 small rounds within the frame with light amethyst. The center is 4 marquis peridot crystals and yet another very tiny amethyst center. The stamp for the piece is on one of the 2 backplate loops. The chain is simply a high polished silver plated chain that measures 18" long. Beautiful piece.