Art Deco 1.31 Carat Old Marquise Cut Diamond Ring, French, circa 1925

Utterly, utterly magnificent – and just a little bit bonkers. The long, rubover set marquise cut diamond in the centre is white, bright and exceptionally lively. Wide, graduating shoulders are pavé-set with thirty-four (seventeen either side) old and eight-cut diamonds to a light and delicate platinum shank. Framing the piece are a pair of white gold hoops – retro-fitted by a clearly talented goldsmith – which add both strength and style to this impressive Deco stunner.

Accompanied by an independent jewellery report.

Cut – Old marquise cut in the centre, with eight-cuts and old cuts in the shoulders.

Colour – I in the centre. G to J in the shoulders.

Clarity – VS2 in the centre. The diamonds in the shoulders are VS2 to SI1; all are clean to the naked eye.

Carat – Approximately 1.31 carat in the centre, an an additional approximate 0.75 carat in the shoulders.

Circa – 1925.

Size – J (UK) or 4 5/8 (US). Complimentary sizing is available, can go up or down.

Measurements – The centre diamond is approximately 14.9 x 6mm. The ring is 16.9mm at the widest point and sits 6.25mm from the finger.

Metal – The centre of the ring is platinum. The two outer hoops are 18k white gold. French marks.