Ring Band Marked 825 ? HELP?

Question

My boyfriend baught me a lovely temperary engagement/ promise ring and its marked 825 on the inside... is it real silver? it doesnt turn my finger green... it has lil diamonds and a black cubed gem inside.. what is the gem? do you know? is it real, and how to tell?!!! can i wash dishes or take a shower with this ring on? or will it rust or what??

Answer 1

i think black gem is "onyx stone"

u have to put ring in your pocket before you wash dish or take a shower,away from water is better.