Edwardian Ruby & Marquise Diamond Ring

Centering a Cushion cut ruby measuring app. 5.0 x 5.3mm and weighing approx. 0.46ct., vertically flanked by two Marquise cut diamonds weighing approx. 0.76ctw. and set with an additional 22 Old cut diamonds (2 Old European cut & 20 Single cut) weighing approx. 0.44ctw., fashioned in platinum & 18k yellow gold. Circa 1905. Size 6.5.