Engagement Ring Dilemma

Hear ye, O brethren for the Semi-Retired Drama Queen is ENGAGED! She is on a mission to look for that one symbol of love, devotion and fidelity that every woman who has envisioned herself to be a soon-to-be starry-eyed bare-foot bride could ever dream of.

Psst... but no! The Semi-Retired Drama Queen is not expected to be married to anyone anytime soon. She is ENGAGED (by her friend who is a soon-to-be best-man for a wedding) with the task of looking for an engagement ring for a blushing bride-to-be. So to all of you potential suitors out there, thou shall despair not for there is still hope. Rest assure that you could still try your luck to woo the Semi-Retired Drama Queen once she steps down from her throne (permanently) some time soon?

...back to the task at hand! The Semi-Retired Drama Queen thinks that looking for this engagement ring is a very difficult mission. Why?

1. The soon-to-be groom has a very limited budget but wants a simple but elegant ring that a girl would like to show off (so a 1 carat solitaire is out of the question)
2. The Semi-Retired Drama Queen does not know the soon-to-be bride (nor the groom) and her friend who is the soon-to-be best man said that he does not have any specifications but trusts her with choosing the right ring

Therefore the challenge is to choose an "affordable" engagement ring irresistible enough for any random soon-to-be bride to say "Yes!" when the soon-to-be groom pops the question.

The Semi-Retired Drama Queen thinks that the plan could backfire...

...and turn disastrous if the soon-to-be bride ever finds out that the "affordable" ring was chosen by a random stranger.--->The poor bride-to-be?