What do I do if I am ashamed of my engagement ring?

Take it to the great eye of middle Earth and throw that bragging right into the lava. Rings are NOT magical weapons that convince seducers out of seducing you or your husband. Your spirit and loyalty to your spouse is the only thing that proves you worthy of marriage. Not a stupid ring that turns you invisible when a seducer comes along. Fanciful vanity and propaganda is what most women are stupidly raised on.