Diamonds are the hardest known substances on earth. With the proper care, they can last a lifetime and can even be handed down as heirlooms to future generations without losing any of their luster. But they can still be scratched, chipped or dulled if not handled correctly.

A diamond can scratch another diamond, as well as other jewelry pieces, so store diamond items separately. If you need to store diamond items together, make sure they aren’t tangled together so they won’t scratch one another. Diamond jewelry pieces are best stored in a fabric-lined jewel case or in a box with compartments or dividers.

Never wear diamond jewelry while doing heavy work. Even though a diamond is extremely durable, it can be chipped by a hard blow, and even everyday activity can loosen a setting.

Don’t let your diamonds come in contact with chlorine bleach or other chemicals because they can pit or discolor the mounting.If your diamond has been treated or altered in any way, it may need special attention and care. Diamonds can be colored, tinted, coated, irradiated or heated to improve their appearance. Inclusions are sometimes removed with lasers. Ask a jeweler you trust to let you know if your diamond’s natural appearance has been altered and to advise you of any special care procedures.

Take your diamond jewelry to a jeweler every six months to have it professionally cleaned and to have it checked for loose or bent prongs and wear.