A Ruby, Diamond and multigem pendant necklace/ brooch by Buccellati

18 rose and yellow gold
16 1/4 inch or 40 cm 
Necklace is suspending a detachable openwork pendant brooch, centering upon a cluster  of rectangular cut citrines  and yellow and brown topaz, intersperesed with diamonds with an oval cut Ruby  surround from a rectangular  cut yellow Topaz link to the necklace .
necklace is spaced by rubies and sculpted gold links jointed by a yellow topaz clasp
brooch and necklace are each signed Buccellati, Italy 
coming with gray silk envelope and certificate from Buccellati