One is a 2mm 18ct yellow gold band with an 18ct white gold rub over setting for the 4.75mm diamond(approx. 0.40ct). The other band is a 3mm white gold open band with 2x 18ct white rub over setting for 2x 3.84mm diamonds(approx. 0.20ct).

A second image of this ring can be seen in the next gallery view.