18K金镶嵌3.04克拉椭圆形切割红宝石,配镶圆形及玫瑰形切割钻石,指环尺寸6 1/4附Gubelin证书及附加信,GRS证书及附加信 Accompanied by report no. 18041109 dated 30 April##2018 from Gubelin stating that the 3.04 carat ruby is of Mozambique origin, with no indications of heating, also accompanied by Gubelin information sheetAccompanied by report no. GRS2019-018453 dated 18 January 2019 from GRS stating that the 3.04 carat ruby is of Mozambique origin, with no indications of heating, “GRS-type pigeon blood ruby”