Aimpon Jewellery/Jewelry - Five Metals - Chennai Jewellery

My wife bought aimpon anklet from Chennai last time from a Chennai jewellery shop when we visited Chennai. Aimpon was very cheap and it was around Rs.200 to Rs.300 only approximately. It was completely gold in color, but it is not actually gold. It actually looked good. But, after couple of days of use - it lost its color and it is not even like the gold covering jewelry. The anklet became completely like dark copper metal now.

I became curious and was checking out what does this metal contain. Yes, as the name says - it is Five Metals composition. Gold, Silver, Copper, Brass and Here is the description -

ஐம்பொன (aimpon)

the five kinds of metals:

பொன் — gold
வெள்ளி — silver
செம்பு — copper
பித்தளை — brass
ஈயம் — lead