1.5 (top) vs 1.68 (bottom)?

We purchased a 1.68 carat but I’m worried it’s going to be too huge on my size 4.5 finger. Considering a 1.5 instead. What looks more appropriate for my finger size?

We purchased a 1.68 carat but I’m worried it’s going to be too huge on my size 4.5 finger. Considering a 1.5 instead. What looks more appropriate for my finger size?