I will be getting married this year, and will need to buy a diamond ring.
No, you choose to buy a diamond ring. There is no need. it's a (very wasteful) ritual you are choosing to engage in, like marriage and reproduction.Agree, $50.000 for a ring is crazy.. you must truly be in love
A very expensive ring indeed.
If you only want them to accept bitcoin for your purchase then you would likely have little problem getting them to accept it once via coinbase or bitpay.
Getting them to accept bitcoin for all of their customers would be much more difficult and time consuming.