This proposal comes background check-ready! In case you're just not quite sure yet.
Check out these wedding bands by Sakurako Shimizu. They are molded into a waveform representation of your partner's voice recorded saying "I do," or any phrase you choose. A very cool and unorthodox idea!
And nary a portal shall ever separate them.
Unless you meant it to be an engagement collar, that won't fit her 1-pixel wide fingers...
For those of you who want the karat count in your diamond to match your maturity level.