Mine is slightly larger, but my finger size is a 4. The stone is a 1.64 H VVS1 in a vintage setting with fish tale prongs, which gives it more coverage, so take that into consideration when your looking at it. But a 1.5 on a size 4 no matter what style the setting is going to look big
Sorry some of the pics are blurry! But you get the idea!
My ring has a 1.53 center stone. I am attaching pictures of it alone and with my wedding band. I just took the pics with my phone- sorry if they aren't the best. I wear a size 5
This is my mom's upgrade done by Brian Gavin Diamonds. Hers is a bit bigger - it's a 1.65 K VS2 - and my finger is just a bit smaller -3.25 - but you get the idea
a tad more real life perspective.... oh and I just found out my D 1.55 RB actually has faint flouro- which may account for why in that lighting of my pick above has a hint of blue!