An Art Deco-style platinum tanzanite and diamond ring, featuring a tapered rectangular step-cut

An Art Deco-style platinum tanzanite and diamond ring, featuring a tapered rectangular step-cut tanzanite, approximately measuring 10.8 x 6.5 mm, channel set in the centre, flanked by six descending baguette diamonds with an estimated total weight of 0.82ct, to a plain flat shank, London hallmarked '950' with sponsor's mark 'DJE', dated 2018, ring size M, total weight of item 13.5 grams.