Vintage Edwardian Pietra Dura floral octagonal brooch. pnvc754

Vintage Edwardian floral octagonal Pietra Dura brooch. Delicate shades of mauve, forest, olive, periwinkle & white stone or glass set into a black background what is most likely onyx. Set in silver plated metal setting with safety pin clasp. Great condition. You can see some tiny fleabites to the inset pieces if viewed with magnification. 1-3/8 x 7/8 inches.