Ring Art Deco Headband diamonds on Platinum

Ring headband in paltinium (hallmark: dog's head), set at its center with a line of five diamonds antique-cut, in a surround of diamonds rose-cut.Total weight of diamonds estimated at 0.30 Ct (color estimated H, purity estimated VS to SI). Circa 1920, Art Deco, France. Gross weight: 2.24gSize: 50 (diameter 15.75/ US 5.10)Design height: 0.80cm Condition: very slight micro-scratches on the paltinium parts, natural inclusions in the stones, see photos. The name diamond is derived from the ancient Greek adamas meaning "the indomitable". It is composed of almost pure carbon, like graphite. How is it that the same chemical element can produce two such different allotropes? Find out in our article. All our vintage rings.