For many people, diamonds are among their most valuable assets. Whether part of an heirloom piece of jewelry or held in a safety deposit box, diamonds are treasures. But like any valuable asset, such as a rare car or real estate, diamonds must be properly maintained in order for them to remain beautiful and to keep their value. Failure to preserve your diamonds in the best possible condition could ultimately cause your diamond jewelry to depreciate over time. Let's take a look at some of the most important tips for keeping your jewelry looking its best over all the years that you choose to enjoy it.