The Rivoli: Ladies Signed 14K White Gold Emerald and Diamond Ring. Created in elegant 14 karat white gold, this vintage ring places a 0.91 carat natural emerald at its focal point. Complementing the center stone, a tapered baguette diamond graces each side, contributing a combined 0.10 carats of tapered baguettes to the overall design. The ring is marked with the initials "LMB" to denote its creator, although we have yet to identify the maker. Presently, the ring is sized at 7, but it can be resized for an extra fee upon your request.