Guinevere's engagement ring is a Fancy Yellow cushion-cut center diamond flanked with one colorless pear-shaped diamond on each side. There are three different wedding bands I suggested. Here's what to look for if you have an engagement ring similar to Guinevere:
Alternating ovals and rounds: This wedding band works because the ovals look similar to the pears on her engagement ring. This creates a nice horizontal flow in the background making her vertically set center diamond pop.
Alternating baby emerald cut and round brilliant cut: This wedding band works because the emerald cuts are step cuts. They have a calm look. The round brilliants compliment the brilliant cut diamonds on her engagement ring, making her engagement ring pop.
A subtle wave of unexpected shapes; marquise, and pear shaped diamonds: This wedding band's wave hugs the engagement ring and acts as a frame. The unexpected cut on the curved band, gives this band an edge. The eye goes to the unexpected cut and then flows into the center stone, making it pop.
Here is Guinevere comparing options 1 and 3:
