Eleanor Roosevelt's solitaire came from Tiffany's; Dennis Oppenheim created a sculpture in New York based on their engagement ring designs; George Peppard had a plastic ring from a box of Cracker Jack engraved by them in the classic Breakfast at Tiffany's. Since 1837, these experts have been dealing in rings and diamonds and little blue boxes with white ribbon. There is no known account of a woman declining a proposal accompanied by that box. Pricey? Certainly. But she's worth it.