Avant Garde 1.10 Carat Sapphire & Transitional Cut Diamond Ring, French, circa 1955

A superbly unusual ring. The royal blue sapphire is secured in a six claw open collet, and sits about above an idiosyncratic head. Shaped like a cross between a “V” and a pear drop, the head is set with three transitional cut diamonds and four smaller eight cut diamonds, which leads to a open gallery with scrolling cheniers. The platinum head of the ring sits atop a white gold twist shank. Marvellously, marvellously bonkers.

French hallmarks.

Cut – Round faceted sapphire. The four smallest diamonds are eight-cuts; the three largest are transitional cuts.

Colour – Diamond are F.

Clarity – The diamonds range from SI1 to SI2. All the stone, including the sapphire, are clean to the naked eye.

Carat – The sapphire is approximately 1.10 carat. The largest diamond is approximately 0.30 carat, with an overall approximate diamond weight of 0.56 carat.

Circa – 1955.

Size – O 1/2 (UK) or 7.25 (US). Complimentary sizing is available, can be sized up or down.

Measurements – The sapphire is 6.6mm in diameter. The head of the ring is 16.3mm by 11.1mm and sits 7mm from the finger.

Metal – 18k white gold and platinum. French hallmarks.