Reset shine to coins and jewelry
Coins and jewelry that have begun to collect a sweet dirt can be cleaned with nothing but a can of coke.
If for some reason you care about how shiny your booty is to simply drop the ugly coins in a kettle and leave them overnight. In the morning pour coke down into the drain, rinse the coin in warm water and dry them dry.
I took a handful of ugly pennies and nickels, dropped them in a cup of coke and let them sit overnight. While most did not return to its original shine, the black gloss was removed from almost every penny. But they needed a little polish with a cloth.
It's wise to be careful when trying this on jewelry, as the Coke's acid can also remove paint and rust from metal if left out for a long time. Remove jewelery and rinse immediately.