You are buying the wedding band as seen in the first photo.
A stunning curve band set with round and tapered baguette clear diamonds
Will pair best with a round center stone about 7-8mm in size (The diamond used in the pairing photos measures 7.6mm)

Ring size: US 6 (Free resizing up or down 1 size)
Ring width: 1.7-1.8mm
Material: 14K white gold
Gemstone: Earth-mined natural diamonds; 0.21ct total