I have two rings, one says Allah and the other one has the Shahada. I also have one bracelet that has Allah's name and I have a necklace with a verse from the Quran. Do I have to take them off when I go to the bathroom?
Bismihi ta'ala
No, you do not need to take them off when you go to the bathroom, as long as you are certain they will not be contaminated with any najasah, and you keep them away from any impurity, or from you touching it without wudhu.
Otherwise, you can take them off.
Another suggestion would be to paint a layer of clear-colour nail polish.
And Allah knows best