18K金镶嵌2.64及2.31克拉缅甸红宝石,配镶钻石,耳环长约 4.5 cm附GRS证书 Accompanied by report no. GRS 2018-071628 dated 18 July 2018 from GRS stating that the 2.64 carat ruby is of Burma(Mogok, Myanmar) origin, GRS type "pigeon's blood", with no indication of thermal treatmentAccompanied by report no. GRS 2018-071627 dated 18 July 2018 from GRS stating that the 2.31 carat ruby is of Burma(Mogok, Myanmar) origin, GRS type "pigeon's blood", with no indication of thermal treatment