Thickness Of An Ohio Drivers Licence What Is The Best Thickness For An Engagement Ring?

What is the best thickness for an engagement ring? - thickness of an ohio drivers licence

I try to choose an engagement ring, and I have everything except the thickness of the ring. I like the size of 2 mm, 2.5mm, 3mm, 4mm, 6mm. I know what that means, but, ladies and gentlemen, what size would be more thick, with a round diamond ct, 54?

My gf is about 5 m 4 cm and weighs around 100 105 pounds.

Any help would be very grateful.