Updated: Mar 24, 2020
I suggest soaking your diamond ring in hot soapy water for 15-20min. Dishwashing liquid does the job. Gently scrub your diamond...an old soft-bristle toothbrush works perfectly. Take care not to yank the claws should the bristles get caught (this can loosen the claws over time). I rinse my ring under cool running water and then pop it under the hairdryer on a low setting...voila!
Photo courtesy of The Jewelry Box Blog