Need advice from someone who knows jewelry?

My mother died recently and left me the three rings she loved dearly. One of the sapphire, which my grandfather gave my grandmother, when she was my mother, and now it is for me. The other two are the mother's wedding rings – we are a band of gold and diamonds, the second spray. Three rings are too big for me, so I have to re-size. My question is: if the finger should I wear the ring? I am not married (not even close), and I wear any other cycles normally. But I think I should keep the case open to Ringfinger … So should I wear my wedding band and the right to Ringfinger to the average size of the sapphire finger? Is there such a tradition of such a thing? I am not a person I do not know jewelry, a lot of this stuff, but I wear them until the day I die, then I do. I appreciate all the contribution here. Again, the two wedding bands, I want to be together, and the sapphire ring. Thank you

Typically, the sapphire back middle finger of his left hand. Diamonds must be entered on the right .. When they wave the gold, then the third finger / ring to the right and when they are in silver, the middle finger and right hand.

14 Karat White Gold Princess Cut Diamond Sapphire Wedding Band 0.37 tcw. WB72 MDC NYC