Vintage solid Gold Ring set with a Large Cluster of Multi-coloured Tourmalines

Very attractive Vintage solid 9ct Gold Ring set with a Large Cluster of 10 Multi-coloured Tourmalines. Excellent condition with no damage or losses. Clearly Hallmarked for both British and U.S.A Hallmarks; full fine British Hallmarks including 375 and 417. The 10K mark being the American Hallmark (minimum USA gold Standard of 10K). This ring is of British origin and remarked 10K in USA to be sold at some stage; both hallmarks confirm, the British 9ct Gold Standards quality. Dimensions approx.: Ring Size P 1/2 or 7 1/4 ; Each Tourmaline is 6mm x 3mm x 2mm deep x 10 No. TCW 1.8ct approx.; Band width generally 2mm; Band thickness 1mm at rear to 2mm at shoulders. Mid Century. England / U.S.A.