Huge brooch, based on a vintage design. It is new though. 

Antiqued goldtone body, of a snake with three tails, and some acrylic "stones" in his coils and hood. 

Also has a large, manmade malachite cabochon hanging from it. 

Horizontal bar pin and C-clasp closure. 

Quite large, at 3.25" wide, 3.25" total length.