Antique 18ct Yellow Gold & Platinum, Edwardian era Emerald and Diamond Halo Ring

This Edwardian-era ring features an emerald center stone set in a halo design with diamonds, combining 18-carat yellow gold and platinum metalwork typical of early 20th-century jewelry. The mixed-metal construction—yellow gold with platinum accents—was characteristic of the period, as platinum was favored for its durability in holding diamonds while yellow gold provided the band structure. The emerald's specific dimensions, color grade, and clarity are not documented in the available specifications, nor are details regarding treatments or certifications. As an antique piece, the ring would benefit from professional evaluation to confirm stone weights, any historical repairs, and overall condition.