My sister gave me a Connoisseurs Diamond Dazzle Stik. This product is A.M.A.Z.I.N.G. I cleaned my diamond ring last night and wow! I normally use my ultrasonic jewelry cleaning machine, but the Dazzle Stik got my engagement ring cleaner than the ultrasonic machine ever did! I cant believe how great it works. You will not believe your eyes! And to think I thought my diamond was clean before! It looks like it just came from the jewelers!