A coral and diamond "Rose de Noel" brooch, by Van Cleef & Arpels. Photo Christie's Image Ltd 2014 Centering upon a cluster of circular-cut diamonds with 18k gold stamen, extending carved pink coral petals, to a sculpted 18k gold stem and leaf, mounted...

Coral and diamond brooch, Cartier, 1950s.. Of stylised floral design, set with coral discs studded with circular-, single- and brilliant-cut diamonds, the stem and leaf set with similar stones, mounted in platinum.

A lava, coral and diamond brooch, by Hedy Martinelli. Photo courtesy Bonhams. Modelled as a Chinese man, his clean-shaven, laughing face carved in lava, wearing a branch coral (corallium rubrum) headdress and robe with brilliant-cut diamond decoration,...