Nonferrous alloys: alloy with a fine gold colour used for imitation jewellery Among the given copper-based and bearing alloys, identify the one known for a gold-like colour and typical use in imitation jewellery. Choose the correct alloy.

Given

• Identify the alloy with a gold-like appearance commonly used for imitation jewellery.

Concept
Aluminium bronze (Cu–Al, typically 5–12% Al) exhibits a distinct yellow-gold colour and good corrosion resistance, making it suitable for decorative applications including imitation jewellery.

Eliminate options

• Silicon bronze: typically reddish-brown; excellent corrosion resistance but not especially gold-like.
• Gun metal: Cu–Sn–Zn; greyish bronze, used for bearings/valves.
• Babbitt metal: soft bearing alloy (Sn/Sb/Cu or Pb/Sb/Sn), silver-grey, not decorative.

Final Answer
Aluminium bronze