Diamond rings almost always have a great deal of sentimental value. Many are engagement or wedding rings, some are family heirlooms, and still others celebrate other important life events. When the stone is damaged or lost, it is almost always worth the cost and effort to replace the diamond.
Visit the jeweler where the diamond ring was originally purchased. Some jewelry stores offer a lifetime warranty with their rings, and they will replace the stone regardless of how it was damaged or lost. Other warranties may cover some types of damage but not others. Your jeweler can assess the problem and tell you whether he'll fix it. If store does not offer you a free repair, be sure to request an estimate.
Talk to your insurance company. Your diamond ring may be insured under your homeowner's insurance or an insurance plan may have been purchased with the ring. Depending on the type of insurance and the nature of the damage or loss, your repair may be covered by your policy.
Choose a replacement stone. You may want to look for a stone identical to the lost or damaged one. You can also consider having the ring fitted with another stone of your choosing. A jeweler can replace your diamond with one of higher quality, for example. You may also want to take the opportunity to give your ring a different look and have a colored stone put in its setting.
Return the ring to your jeweler to have the replacement done. Replacement can take anywhere from a couple of days to several weeks, depending on the service required, so be prepared to wait.