EXCLUSIVELY AT NEIMAN MARCUS; Letter ring by Roberto Coin.; Tapered 18-karat white gold band.; I, J, and L; 0.03 total diamond carat weight.; K, T, and Y; 0.04 total diamond carat weight.; C, F, P, S, V, X, and Z; 0.05 total diamond carat weight.; A, B, D, E, G, H, O, R, and U; 0.06 total diamond carat weight.; N and Q; 0.07 total diamond carat weight.; M and W; 0.08 total diamond carat weight.; Roberto Coin signature hidden synthetic ruby.; Ring size, 6.5 (all).; Made in Italy.