This early 1900s well made antique Russian ring features a 4.68 ct natural, eye-clean, very rare Kashmir sapphire of a pure blue color.
The sapphire is framed by a halo of old mine cut diamonds set in platinum over 14K gold and flanked by diamond-set platinum ribbons .
The ring is marked with later Soviet era control mark for 583 gold standard which indicates that the ring was sold through a state owned jewelry shop or an auction. It comes in a fine antique wooden case of Denissov-Uralsky & Co. jewelry shop at Moika 42 in Saint Petersburg (stamped in French).
The sapphire and diamond cluster measures 16 x 14 mm (5/8 x 9/16 in.)
Ring size 6 (16 mm) resizable
The ring is accompanied by the Gübelin (Switzerland) gemmological report 21072058 and Gübelin gemmological profile (19 pages) in a deluxe leather folio, the AGL Prestige gemstone report 1116249, and the GIA country of origin report 2223011274.
