Vintage bypass solitaire ring in 18K yellow gold, French work, circa 1970-1980. • Metal: 18K yellow gold 750/1000, tested as 18K - French hallmarks: Eagle's head for 18K + maker's lozenge inside shank, visible on photos • Weight: 3.52 grams total on scale • Ring size: 55 FR / US 7.25 / 15.75mm inner diameter - on mandrel photo • Stone: 1 pear-cut orange gemstone, approx. 15mm x 10mm, approx. 4-5 carats if citrine / quartz, approx. 5.5ct if topaz - open 4-prong basket, eye-clean, no foil • Color: Madeira orange / mandarin • Condition: Very good vintage condition, pear tip intact, no chips, prongs secure, light wear on shank Gemstone identified as citrine-type / Madeira citrine color, to be confirmed by gemological test. No certificate. Photos: mandrel size, hallmarks, side view showing depth, weight on KERN scale.