This mid-century engagement ring features a dazzling 1.73 carat GIA-certified diamond, elegantly set in 18k yellow gold with platinum details. Certificate: GIA #5231467876Center stone: Round brilliant cut diamond Weight: 1.73 caratColor: KClarity: VS1Metal: 18k yellow gold and platinum Era: Mid CenturyCirca: 1960's Hallmarks: Purity mark Size: 7.25 and can be resizedGram weight: 2.99