I agree, branding and style would be important. Having a celebrity or two use for their engagement wouldn't hurt, either. I think you'd want it to work kind o

I agree, branding and style would be important. Having a celebrity or two use for their engagement wouldn't hurt, either. I think you'd want it to work kind of like a cashier's check. If you have the ring and your identification matches what's on file, then cashing out your investment is easy. If you've lost the ring or you're not the primary on the account, there are delays (of perhaps months) but cashing out is still possible.