Gatsby Jewellery Ltd has dated this piece to the 1910s.
The stone is secured in a six claw coronet collet with impressively and intricately crafted shoulders set with fourteen (seven each side) eight cut diamonds.

Accompanied by a De Beers Institute of Diamonds grading report (#010000277026). A unique number has been inscribed on this diamond providing utmost security.
Cut – Old European cut in the centre, with eight-cut diamonds in the shoulders.

Colour – The centre is O/P the diamonds in the shoulders are G to H.
Clarity – The centre is VS1. The diamonds in the shoulders VS2.
Carat – The centre is 1.41 carat, with a further approximate 0.15 carat in the shoulders.

Circa – 1910.
Size – N 1/2 (UK) or 6.75 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The centre is 7.35 x 7.26mm and sits 5.1mm from the finger.
Weight – 3.42 grams.
Metal – Stamped PLAT inside the band, and tests as platinum.
Gatsby Jewellery Ltd has dated this piece to the 1910s.
Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.
You can view the stock and full dealer information on the Gatsby Jewellery Ltd Profile Page