Art Deco GIA emerald diamond 18k yellow gold and platinum ring

This Art Deco 18k yellow gold and platinum ring features a GIA-certified Colombian emerald-cut emerald of approximately 0.50 carats, F1 treatment, accented by 12 old European cut diamonds totaling approximately 0.50 carats, F-G color, SI clarity, and calibre-cut emeralds totaling approximately 0.05 carats. Circa 1930s. Certificate: GIA  #6233490741 Center stone: Emerald cut emeraldWeight: Approximately .50 caratsOrigin: ColombiaTreatment(s): F1 treatmentAccent stone: 12 old European cut diamondsWeight: Approximately .50 caratsColor: F-GClarity: SIAccent stone: Calibre cut emeraldsWeight: Approximately .05 caratsMetal: 18k yellow gold andEra: Art DecoCirca: 1930'sHallmarks: Purity markSize: 8 and can be resizedGram weight: 2.56