18th century sapphire ring

18th century gold mounted sapphire single stone ring, English c.1780

The single collet set rectangular sapphire, the underside fluting leading to an aperture. Fleur-de-lys to each shoulder, leading to a ribbed shank with detailing to the bottom.

The mounting really is of the highest quality, beautifully made and in fabulous condition, a very rare example of a fine 18th century ring

Finger size UK - J, US - 4 5/8