'Madame de Pompadour' Green Tourmaline & Diamond Halo Ring

'Madame de Pompadour' 18ct White Gold Halo Ring with Four Claw Set Cushion Cut Green Tourmaline 9.72ct with Claw Set Round Brilliant Cut Diamonds set on the Shoulders and Halo Surround & 38=0.92ct G/SI and Oval Diamonds 8=0.84ct G/SI set on the Halo Surround