Edwardian trefoil diamond, demantoid garnet and sapphire cluster ring

Edwardian trefoil diamond, demantoid garnet and sapphire cluster ring in 18kt yellow gold. Set to the centre with a round Old European cut diamond in a claw setting, a round mixed cut demantoid garnet in a claw setting and a round mixed cut cut sapphire in a claw setting, to a three stone cluster in the form of a clover, fitted to the bottom with a stylised stem set with a rose cut diamond in a grain setting, flanked to either side with round slim shoulders that curve to a solid shank.