Vintage Poiray Paris Yellow White & Rose Gold Tricolour Transformative Diamond Band

A vintage circa 2000 Poiray Paris 18ct yellow, white and rose gold tricolour 'bague symbole' transformative band set with diamonds. The thirty diamonds hidden with the band are round brilliant cut, D-E (exceptionally white) in colour and VVS in clarity, 0.45ct. This ring is signed and numbered 18764 by Poiray Paris 1975.