George II Amethyst Solitaire c.1750

Rare example of an original single stone mid-c18th ring with a perfect fluted 'basket back'  to a plain gently reeded original shank.Undisturbed cut-down setting enclosing the original octagon-cut foiled amethyst. c.1750. Georgian refinement at it's best. High-carat gold. Ring size UK N1/2. US 7.