A coloured diamond and gem-set ring, modelled as two cobra heads, pave-set throughout with round brilliant-cut diamonds of light greenish-brown hues, the textured heads of each snake decorated by a drop-shaped faceted citrine collets, tsavorite garnet eyes and mother-of-pearl panels the reverse set with carved mother-of-pearl, accented by diamonds and coloured diamonds, maker's mark, diamonds approximately 1.00 carat total, mounted in 18 carat yellow and blackened gold, ring size L 1/2