Ring Dome diamonds 2.40 Cts rose gold and platinum 40s

Ring cocktail target, in rose gold 18Kt and paltinium (hallmark: eagle's head and dog) set in its center with an diamond weighing approximately 0.70 Ct (color estimated J, purity estimated VS2), in a setting of diamonds antique-cut stones weighing approx. 1.70 Ct (estimated color H to J, estimated clarity VS to SI). French work, circa 1935/1940. Gross weight: 11.18gSizeSize: 58 1/2 (diameter 18.50/ US 8.50)Design height: 1.50 cm Condition: very slight micro-scratches on the gold and silver parts paltinium, slight abrasion on diamonds with a few bumps, see photos.   L'rose gold contains 75% pure gold, 20% copper and 5% silver.silver. Copper gives gold its pinkish color. There is also the rarer red gold, composed solely of gold and copper. All our antique rings.