a=0,80 mm; b=3,00 mm; c=4,60 mm, sterling silver (AG-925)
a=3,00 mm, b=10,00 mm; c=3,10 mm; d=1,55 mm, sterling silver (AG-925)
A=11,90 mm; B=6,90 mm; C=1,80 mm; D=0,50 mm, sterling silver (AG-925)