Vintage agate pendant filigree gold necklace

Vintage Agate elaborate filagree estate jewelry necklace. Pendant has large oval stone of what I believe to be agate on an elaborate gold plate filagree setting. Pendant measures 1” tall and a 1/2” thick and is on a 24” chain. Unsigned. In good condition, some wear to plating on prongs as pictured. From a smoke free pet friendly home.