What is the appropriate size/value of diamond to give for engagement? Those De Beers ads would have us believe '2 months salary' or more. By that formula, I should be buying a $30000 ring. Am I being a cheapskate if I buy a $15000 ring? Do you think it's wrong for a woman to expect more than this? I don't have any personal friends who have spent more than this, yet somehow, I feel like I am being cheap if I don't spend more. I'd rather spend the extra $15000 on vacations, save for a bigger house, etc.