A dental jewel is usually a jewel which is attached to your own tooth’s surface (it can be attached into or onto a
porcelain crown as well, but it is not very common).
The jewel may have various sizes and shapes but it is worth to buy a good quality one because jewels of poor quality
may get detached and cannot be polished.
If the jewel is attached by a professional person (a dentist) it does not harm the tooth and might it have to be removed
later it will be possible to restore the original status again.