This vintage platinum cluster ring is bezel-set with a cabochon cut midnight blue sapphire surrounded by ten sparkling old mine cut diamonds (H-I-J color, VS1-SI1 clarity).
Marked with 900 platinum mark and diamond / sapphire weight:
Total diamond weight is 2.43 carats.
Weight of the sapphire is 4.15 carats.
Sapphire and diamond cluster measures 19 x 16 mm (3/4 x 5/8 in.)
Ring size 6.75 (17 mm) resizable