A=28,00 mm; B=15,50 mm; C=2,20 mm; D=0,90 mm, sterling silver (AG-925)
a=28,00 mm; b=4,80 mm, sterling silver (AG-925); the widths of the wire: 0,80 mm
a=26,50 mm; b=13,50 mm; c=3,70 mm; d=0,80 mm, sterling silver (AG-925)
a=19,00 mm; b=11,00 mm, sterling silver (AG-925); the widths of the wire: 0,80 mm