Victorian Filigree Pin Brooch with Granulation and Bezel Set Gemstone

Victorian Filigree Pin Brooch with Granulation and Bezel Set Gemstone. •Excellent condition. Smoke-free home. An estate piece. The stone looks to be in the agate family, I'm not 100% sure though. It's an Ivory color with blue. The filigree wirework is beautifully intricate, adorned with granulation with twisted wire around the bezel set cabochon. I didn't see any hallmarks.