A ruby and diamond ring

A ruby and diamond ring, the central round brilliant-cut diamond estimated to weigh 0.55 carats millegrain-set within a circle of calibré-cut rubies to a kite shape surround of pave-set old-cut diamonds estimated to weigh a further total of 0.6 carats, two more calibré cut rubies set to each shoulder, all in gold and platinum mount, halmarked platinum London 2000, bearing the Bentley & Skinner sponsor mark, gross weight 3.4 grams.

No. 29781M