PLATINUM, RUBY AND DIAMOND BROOCH, EARLY 20TH CENTURY,Early 20th century, Oval ruby weighing app. 0.47 cts. surrounded by 48 graduated diamonds together weighing app. 0.90 cts. wt.; 5.1 grams. Estimate $1,000-1,200
The diamonds range in size from 1.3mm to 2.1mm and are in the SI1-I1 clarity ranges, F-G in color. The ruby measures 5.1mm x 4.5mm x 2.55mm and is a heavily included, medium dark, strongly pinkish red with good intensity. Stamped "Plat".
