Making ship wheel pendant with small stone and copper wire 331

wire size to make pendant diameter 4cm and stone diameter 4mm (can + a few centimeters to depreciate)
19 gauge ( wire diameter 1mm ) : 2 x 9cm( 4 inch)
20 gauge ( wire diameter 0.8mm ) : 40cm( 16 inch)
28 gauge ( wire diameter 0.3mm ) : 200cm( 80 inch)