The Many Types Of Settings
Ring settings are a matter of taste and there is no setting that is superior to all the others, but the size, shape, and even quality of the center stone can dictate which style of setting is most aesthetically pleasing. Rings need to be built center-out.
A single stone Solitaire is still the most popular style choice in engagement rings. There are many types of solitaires including tapered, knife-edge, and twist (style of Solitaire in photo). There are some pros and cons to the Solitaire setting. It is the most classic setting out there and pairs well with basically any wedding band but being just metal, its is very susceptible to scratches.
The three-stone setting is one of the most classic settings out there. Known for its simplicity, the two side stones accent the center and help lead your eye towards the center stone.
Halo setting is when there is a row of small diamonds surrounding the center stone. Inevitably, the halo visually adds to the diameter of the center, making it seem larger. The halo also can help cover up some inclisions that otherwise would have been visible from the pavillion of the diamond.
The Double-Halo creates the same effect as the single Halo and then some. Having an extra row of diamonds not only increases the size more, it can add some extra shine to the setting.
This style of setting is similar to the split-shank style but the shanks connects at the top toward the center stone. As a result, each side of the setting appears to criss-cross.