Antique rose cut diamond solitaire ring, circa 1800.
Antique rose cut diamond solitaire ring. Set with an oval rose cut diamond in a closed back claw and rubover setting, with an approximate weight of 1.40 carats, to a raised openwork collet with fine black enamel highlights and decorative scroll and foliate motifs, the integrated shoulders taper to a D-shape shank with ribbed details. Marked 18 carat yellow gold, French control marks, circa 1800.