i'm new here! wondering if 1.5ct vs 1.8 ct round cut will look significantly different on a size 4 finger. Please let me see your 1.5-1.8carat round cut for reference. Thanks!!!!
While I don't have a size 4 finger to show the you the difference, from professional experience, I can assure you the difference is noticeable.
Without knowing the measurements of each diamond, assuming your 1.5ct is about 7.5mm diameter and your 1.8ct is about 8mm diameter (both are fairly accurate measurements but depend on proportions and cut), the difference is obvious. Half a millimeter is big in diamonds.
If all else equal (proportion percentages, color, clarity, etc. etc.), then yes, a 1.8ct diamond will look different than a 1.5ct diamond on a size 4 finger.
Neither is better or worse, just purely your preference.