I proposed to my girlfriend this Christmas, using our customized Chrono Cross themed rings, made by Takayas. (
https://takayascustomjewelry.com/)
The bride ring represents the Chrono Cross in the middle, with the two halves of the Dragon Tears (from each dimension) on the sides. It also has Serge's bandanna patterns as a motif. This is a white gold ring with sapphires, which unifies love through time and dimensions.
The groom ring represents the Frozen Flame, with the body of the closed flame running on the body of the ring, and the eyes on the top. It also has Kid's daggers as a motif. This is a white gold ring with rubies, which makes impossible phenomena become possible, such as cold fire itself.
Here's a picture of the proposal after some Christmas fireworks, and some pics of the rings themselves.