If you wish to show your loved one that you will be forever hers, then inscribing a personal message in the ring will be the best way to proclaim that.
When on it, the first and most important thing you should do is to get in touch with an expert diamond ring manufacturer. They will help you in selecting a spot on the girdle of your ring to inscribe your personal message. Before choosing the spot, they will also check whether the ring is capable of undergoing the procedure. Note that old and vintage diamond engagement rings with external damages and chips might not be suitable for engraving.
The next thing you should do is to decide the length of your personal message. It is best to keep the message simple, sweet, and short. Short inscriptions like “Forever Mine”, “Truly Yours”, and “Until Eternity”, are all deeply romantic, which means that your loved one will know how much you really love her.