Square Shaped Settings S-163 Square 4-Prong Single Base Cast Setting S-157 Square 4-Prong Wire Cast Setting S-156 Square V-Prong W/ Airline Cast Setting S-156B Square V-Prong W/ Bar Cast Setting S-160 Square 4-Prong Cast Setting S-161 Square 4-Prong Heavy Tapered Cast Setting S-159 Square V-Prong Heavy Cast Setting S-1572 Square Cast Setting S-164 Square V-Prong W/ Peg Cast Setting S-164MP Square V-Prong W/ Peg Cast Setting S-165 Square V-Prong W/ Peg Die-Struck Setting S-158 Square V-Prong W/ Peg Cast Setting S-158H Square V-Prong W/ Peg Heavy Cast Setting S-155 Square V-Prong W/ Peg Cast Setting S-1567 Square Cluster Cast Setting S-1667 Square Cast Setting S-167 Square 4-Prong W/ Peg & Flat Prongs Cast Setting S-167H Square 4-Prong W/ Peg Heavy Cast Setting S-170 Cushion Cut Center Double Prong Cast Setting