Russian, circa 1910
A silver topped 14K gold ring is centered with a cabochon cut blue sapphire (6.2 x 5.95 x 4.2 mm, approximately 1.67 ct) surrounded by 10 old mine cut diamonds.
Estimated total diamond weight 1.50 ct.
Marked with later Soviet control marks for 583 gold and 916 silver standards.
The sapphire and diamond cluster measures 15 x 13 mm (5/8 x 1/2 in.)
Ring size 7.75 (18 mm) sizable
