b'Shamrock Pendant Small Signet Ring25.44mm x 20.65mm x 2.32mm Sizes H 1/2-T 1/2; 8.26mm x 11.49mmTrinity Pendant Medium Signet Ring26.36mm x 25.85mm x 1.88mm Sizes M-Y; 11.65mm x 16.05mmCladdagh Pendant Large Signet Ring26.72mm x 21.75mm x 1.72mm Sizes M-Y; 13.40mm x 14.49mm6'