It is "engagement season"! That time of year where many couple are getting engaged while they celebrate the holidays with their family and friends. For many people, this may be the first time they have worn diamonds or a fine gemstone. Their ring is all sparkly, new and gorgeous. But as time goes on, your ring needs to be cleaned. What is the best way to clean a diamond? Diamond experts agree that running a little warm water in a small bowl with a little mild liquid detergent and allowing your diamond engagement ring to soak for three to four minutes and using a soft brush will get lose debris and oils off your diamonds. And it is a good idea every year to get your rings polished and cleaned and for your jeweler to check for any lose prongs.