stressing costume jewelery chain

The buffing Metalizer paints from model master work for me. They are designed to be airbrushed, as they are very thin out of the bottle, but they are easily brushed on.

I have seen in some hobby craft stores some kind of paint (sorry, I forget the name) that tarnishes metal when you apply it, might look into that as well.

Not answering your question but can I make a suggestion about chains in general?  They're favored by military modelers --but I feel too much so.   Very rarely is there any utility for chains on a military vehicle.  They are seen at the end of winches (with a hook at the end) or in bagged bundles meant for tire traction.  Cables were used for any towing purposes.  Some pre-war nations used them (France for instance) but rarely do they appear in wartime photos.  Just saying...

I agree.  This applies mostly to trucks, etc.  I rely on photo evidence if it is to appear on armour.

Try leaving it in a deep enough dish so you can pour in white vinegar until it's completely submerged. Let that sit until the vinegar completely evaporates.

Also, try setting the chain in that dish then sprinkle in some baking soda. Place it outside then pour in white vinegar. It will chemically react and probably over flow the dish (that's why it's outside).

Thanks SprueOne,

I have not heard of that.  Sounds interesting.  Will definitely give it a try.