"Antique Art Deco Diamond And Ruby Ring, 1920s."
An antique Art Deco style gold ring in yellow gold (approx. 0.700) with silver elements (0.990). Made in the 1920s in Germany. A centrally placed round diamond in an “old” brilliant cut, weighing approx. 0.20 ct (G color / SI1 clarity), surrounded by 16 radiant rosette diamonds in a halo of pink synthetic rubies. ring size 16 (56) Purchase comes with a jewelry certificate from a diamond appraiser item weight: 3.88 g 
Le Magazine
Rivista Artiquariato
TRÉSORS magazine