Thanks for the reply. I thought of those two but it seems an expensive option for a credit card.
There won't be very much of it. I'd guess you would need to recycle a large number of cards to get $100 worth of gold....R
Yes, if it's a precious metal the thickness is probably measured in 10/1000ths of an inch.
Or the even smaller micro-inch that @Coding Badly mentioned.
10/1000 = 1/100.
After a spot check a Digi-Key: