Bathe Your Bling!
Wearing dirty diamonds is like pairing a fabulous steak with crap wine: a total waste. Diamond jewelry collects so much crap during an average day that some begin to resemble their cousin, Mizz Zirconia.
Keep a simple jewelry cleaning solution like this, with a toothbrush (the little brush included is worthless) in your bathroom and, after applying all your makeup and creams, give your rocks a quick scrubbing, at least a few times a week. Rinse, repeat and try not to get too distracted by the sparkle.