Soft Jewellery making grade Aluminium. This Aluminium m. Aluminium, Brass (Yellow), Copper, Red Brass (Nu-Gold) also known as Richlow. known as Red Brass, Nu Gold or Richlow. Gauges 12ga (2mm), aluminium 14ga/14.5ga ( 1.5mm-1.6mm) ,16ga (1.2mm), 18ga (1mm), 19ga (0.9mm), 20ga (0.8mm), 21ga (0.7mm), 22ga (0.6mm - 0.65mm), 24ga (0.5mm), 26ga (0.4mm), 28ga (0.3mm) etc.
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