Toi et Moi ring in 850-millimeter platinum, set with one sapphire approx. 2.50 ct and one ruby approx. 2.70 ct, both pear-cut, shouldered with twelve baguette-cut diamonds (minor dents to both). French M.O. (partial): probably JANCA (Sté) (registered in 1955). Estimated total diamond weight: 0.75 ct Finger: 50 - Gross weight: 10.5 g Note: The Janca workshop, active in Paris since the mid-1950s, produced high-quality creations for several Place Vendôme houses, including Van Cleef Arpels. Its work is distinguished by the meticulous attention paid to the settings and the harmonious combination of decorative stones such as onyx, coral and chrysoprase, characteristic of the French jewelry aesthetic of the period.