This exquisite 'Madame de Pompadour' 18ct White Gold Halo Ring features a 4-claw-set Cushion Cut Green Tourmaline of 9.72ct, as well as claw-set Round Brilliant Cut Diamonds adorning the shoulders and halo surround (totalling 0.92ct G/SI). Oval Diamonds adorn the halo surround, totalling 0.84ct G/SI.