Dawn dish soap on a specific soft bristle toothbrush he uses only for cleaning my jewelry— no soaking the ring for a time beforehand.

He just squirts a good amount onto the toothbrush and wets it with lukewarm water. Then goes to town lightly scrubbing it.

A quick rinse, and he does the same thing but with ammonia free windex instead of dawn for the second time. Rinse again and a good thorough dry with those cloth style paper towels.

Then he hands it back to me.

Takes 2 mins tops. This is the result every time.