To be capable of cleaning your used,dirty jewelry consider this very useful tip of advice.

Place a pot of water on the heated stove.
Insert all dirty jewelry into the pot of hot water.
After waiting merely minutes, remove the jewelry and
towel dry your jewelry.
Then,  clean the jewelry with  toothpaste using a used toothbrush to apply the toothpaste as a cleaner.
You will be very surprised how new it looks.

After having used toothpaste on the jewelry, place it back into the pot and seconds later remove it and view the shine.
Very useful for adding shine gone from before.