The symbol above all symbols. Diamonds stand for eternity and love, it's a symbol of light, life, fidelity, and commitment. Diamonds have played a huge role both historically and culturally due to their incomparable beauty. Clean the diamond by dissolving a few drops of mild soap in a bowl of lukewarm water. Place the jewelry in it for about 10 minutes. The diamond can be brushed gently with a soft brush but be careful not to scratch the gold or silver around it. Rinse the jewelry and wipe thoroughly with a soft cloth.