by diamondseeker2006 » Jan 9, 2017 Lore, I agree with Sunstorm about frequent cleaning. I keep a jar of jewelry cleaner in my bathroom cabinet, and I soak my diamond ring most evenings and then brush and rinse before bed or the next morning. I rarely bother with an ultrasonic. The key is to never let grime build up, so cleaning every couple of days is very helpful and keeps the diamond looking its best. https://www.amazon.com/Connoisseurs-Precious-Jewelry-Cleaner-Fl/dp/B0014LU4FA/ref=sr_1_sc_1?ie=UTF8&qid=1484020754&sr=8-1-spell&keywords=coniseurs+jewelry+cleaner Be certain to get the same label as pictured in the link. They do make other cleaners, but this one is for gold, platinum, and diamonds.