The Red Jaspar necklace (horizontal placement): Cabochon 1 3/4" wide, 1 1/2" high with beading around it: 2 1/2" wide, 2" high Attached necklace is 20", unclasped. Clasp adds another 3/4", so 20 3/4" total. Clasp is sterling silver with a black crystal bead. Backing is black suede.