A platinum single stone diamond ring by Tiffany & Co.,

A platinum single stone diamond ring by Tiffany & Co., a brilliant cut diamond, with a stated weight of 0.73ct, six claw set to chevron section shoulders and a slightly tapered shank. Marked PT950, TIFFANY & CO, 27531636, 0.73ct. 6.09g. With box and outer case. Finger size P Accompanied by a Tiffany & Co. Diamond Certificate, no. 27531636/L11230513, with a stated diamond weight of 0.73ct, colour G, clarity VS1. Condition report: Very minor surface marks/scratches to mount. Two solder joins visible under 10x magnification on inside base of shank, where ring has previously been sized.  Slight scuffs to the edges of the outer case.  Underneath of diamond very slightly dirty, would benefit from being cleaned.