Elegant Signed JJ (Jonette Jewelry) Openwork Flowing Silver Leaf Sleek Brooch

Beautiful silver color brooch of a feather. The foliage is highly detailed and the texture intricate. It is made of metal, of course, but I am not sure what the composition is. It seems a little too glossy to be pewter, but there are no markings to indicate any silver content. The piece is signed JJ on the reverse, which is the mark of the Jonette Jewelry Company. They operated from 1936 until 2006, but this piece is likely on the more recent side of that spectrum. Interestingly, I have been unable to find an identical example of this brooch anywhere online. It may be rare, or maybe my research skills need some updating. Measures 3.75" x 1.5" and weighs 21 grams. It has some size to it but it isn't gaudy. It almost has a streamlined 1930s vibe to it. Definitely looks classy. The spacing of the individual veins of the leaf enhance the already nice shading and shadow effect.