Vintage Edwardian Pietra Dura floral octagonal brooch. pnvc754 Jet The stone is likely a

The stone is likely a Victorian grand tour piece set into a more modern frame with a safety clasp and necklace adaptor

A classic element of art deco jewelry is the circle pin

One of the most beautiful versions of the shape is the navette ring

A navette is a narrow oval shape with pointed ends and means “little ship”

a parrot's beak

Vintage Edwardian Pietra Dura floral octagonal brooch. pnvc754 Jet The stone is likely aVintage Edwardian floral octagonal Pietra Dura brooch. Delicate shades of mauve, forest, olive, periwinkle & white stone or glass set into a black background, of what is most likely onyx. Set in a 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.