DIAMOND, EMERALD AND ONYX RING, 'PANTHÈRE', CARTIER

The sprung crossover ring designed as double panther heads, pavé-set with brilliant-cut diamonds, to the pear-shaped emerald eyes and cabochon onyx nose, mounted in 18 karat white gold, signed Cartier, numbered, French assay and maker's marks, size 7½, case stamped Cartier.

Cf.: Vivienne Becker et al, Cartier Panthère, New York, 2015, pg. 296 for an image of a similar ring.