The photograph shows the setting; the centre stone in it is not the weight you have picked. For that, see the picture below, which is to scale.

1 carat round

6.5 mm across

Shown actual size on a size 6½ hand. Carats are weight; millimetres are what the hand sees.

Solitaire setting

One stone and a plain band. Nothing competing with it, and the setting everyone pictures.

We price this by hand. You get the quality options available at that shape and weight and what each one costs, usually the same day. Nothing is charged until you have seen them and said yes.