Nell & Robert Woodruff Auction Vintage platinum and diamond engagement ring given by Robert Woodruff to his wife Nell Hodgson Woodruff comprising of a 4.61 carat marquise brilliant cut center diamond (F-color, SI1-clarity) and two 0.30 ctw trapezoid shape side diamonds (F-G color, VS2 clarity). Maker's mark and fineness to ban; ER in circle, Erwin Reu Co. and 10% IRID PLAT. Accompanied by GIA certification for center diamond, from September 13, 2021. Approx. US ring size 7.5, total weight 5.8g. ((PHOTO: From the Estate of Nell & Robert Woodruff, Courtesy of Ahlers & Ogletree Auction Gallery) )