A 17TH CENTURY DIAMOND, GOLD AND ENAMEL RING, the bezel with rectangular-cut diamond in lozenge-shaped setting between similar three-stone blue and white enamel openwork shoulders, the reverse with traces of blue and green enamel and with narrow gold hoop of triangular section, circa 1640

细节
A 17TH CENTURY DIAMOND, GOLD AND ENAMEL RING, the bezel with rectangular-cut diamond in lozenge-shaped setting between similar three-stone blue and white enamel openwork shoulders, the reverse with traces of blue and green enamel and with narrow gold hoop of triangular section, circa 1640

拍品专文

For a ring of similar date cf. Christie's 2 October, 1991, lot 349