18ct Yellow Gold & Platinum Stamped 1970s 3 Stone Emerald & Diamond Trilogy Ring

This 1970s trilogy ring features an emerald center stone flanked by two diamonds, crafted in 18-carat yellow gold with platinum accents. The emerald cut stone is the focal point, while the diamond side stones provide classical symmetry typical of trilogy designs from this period. The combination of yellow gold and platinum creates a two-tone effect that was popular in vintage fine jewelry. The ring bears appropriate hallmarks confirming its 18-carat gold content and mixed metal construction.