- Re-cut the stone: This would not be worth it for a smaller diamond (something under 2 carats), but a larger gem can be salvaged for the most part.
- Switch it with another diamond of comparable quality: This works better for smaller stones, as well as larger ones carrying chips large enough to be instantly obvious.
- Trade up: See this as a chance to get that better (bigger, brighter, or cleaner) diamond you have wanted for so long.
- Put the stone in another jewelry item: Preferably one with less chance of incurring bumps. Both stone-less and diamond-studded rings take more damage than necklaces and earrings, so check which of the rest of your jewelry could do with the stone you just chipped.
- Give it away: If it no longer holds the worth it used to, present it to someone in the family who would appreciate the gesture.