Although it's not exactly delicate wedding jewellery I shall wear Rinoa's chain and ring with Squall's Griever ring on it also. I believe Rinoa wouldn't be without this on her big day as it's an important symbol of her and Squall's relationship.
A note on Squall's ring:
"Squall's ring features a profile of Griever's head along with one wing along its side. Rinoa Heartilly expresses interest in this ring later on in the game and eventually ends up possessing it where she wears it next to her own ring through a chain around her neck. Eventually Squall allows her to keep it.
The ring, as a symbol, is a tangible manifestation of the circle; it represents infinity and eternity, divinity and life. The ring also represents power, dignity, sovereignty, and strength. Thus, to bestow a ring is to indicate a transference of power. As is exemplified by the traditional wedding ring, the object is also binding, as with husband and wife. "