a=15,00 mm; b=11,50 mm; c=1,00 mm; d=2,10 mm, sterling hopea (AG-925)
A=6,90 mm; B=5,40 mm; C=1,20 mm, sterling hopea (AG-925)
a=11,80 mm, b=13,50 mm, b=2,40 mm; sterling silber (AG-925)