SCARLETTE|1468608142|4055811 said:Thanks so much for everyone's input. I have not found a specific diamond to upgrade yet - just the size increment. I currently have a 3 carat but looking to upgrade to 3.5 (but mostly everyone here thinks not worth it - and I agree) or 4 (which is 10 mm). I think a 4 carat is quite large for me so I will just stay with a 3 carat and perhaps re-do the setting.