Art Nouveau Riker Bros Diamond Sapphire Ring

A most lovely and elegant c. 1910s art nouveau ring, set with three (likely Ceylon) sapphires and four diamonds in a lovely openwork platinum setting imitating branches and leaves. The ring face is further accented with a band of white enamel, while bifurcated shoulders with spiral decorations frame the sides. The shank and outer ring face is solid 18k gold (marked and tested). The inner shank bears a saber hallmark representing Riker Brothers Jewelry.

Founded in 1846, Riker Brothers grew to become one of the most prominent American jewelry firms in the early 20th century. They are particularly notable for creating renaissance revival and art nouveau jewelry of very high quality. In 1916, at the Newark Industrial Exposition, the pieces exhibited by Riker Brothers included platinum jewelry with diamonds, pearls, and colored gemstones.