You might also need to consider cut as part of this. The normal round cut, brillant, is generally more sparkly, therefore a smaller size might be better if you are afraid of the bling factor. Emerald cut is a nice rectangle cut, without as many faucets, therefore they aren’t as sparkly (still very nice, my personal favorite). You could get larger ones, but they are more expensive. Either way, I would suggest staying around 1 carat TW would be a very nice size.

I think she will tell you exactly what size she wants, it sounds like she is hinting already.

1 carat tw.. so 1/2 carat each earing…