Because there are no rules on which finger to wear an anniversary ring, a woman can wear it on the same ring finger as engagement and wedding rings, on the third finger of the left hand or on the right hand. It really depends on the woman's personal preference.
However, there are a few things to be aware of when picking out an anniversary ring to wear with one's bridal jewelry. If a woman is planning on wearing the new ring on the left hand with her other rings, then she should choose an anniversary ring that matches the metal and setting of the wedding and engagement rings. Another consideration is the proportion of the anniversary ring and how it compares to the other rings. The width and height of the new ring should have similar proportions as the bridal jewelry.