gold cluster ring with diamonds and sapphire

This 18 carat rosé gold cluster ring has 10 old cut diamonds (app. 2 carat) around an oval cut untreated gorgeous vibrant blue sapphire (1.77 carat), on each side on the top of the shank a diamond set in a bullet shaped bezel, circa 1890, French.

weight: 6.40 grams
ring size: 17.75 mm / 7 ½ US.
width: 1.8 – 17 mm