Centring on an oval cabochon star ruby weighing 6.36 carats, framed by brilliant-cut diamonds, mounted in 18 karat white and yellow gold, signed. Ring size: 6

Accompanied by Gübelin report numbered 18021046, dated 15 February 2018, stating that the 6.36 carat star ruby is natural, Red colour, of Burmese origin, with no indications of heating; with comments, stating that 'This gemstone displays a strong and well centred asterism (star effect).'; along with two information sheets, stating that 'Mogok-type rubies typically possess a red body colour and red UV-fluorescence. In addition, they may contain tiny amounts of light-scattering rutile silk and a swirl-like growth pattern. It is this combination of features which gives these rubies their characteristic appearance.'; and 'The demand for natural, unheated rubies kept growing while the supply of such gems remains highly limited, making large, natural rubies of gem-quality from all major sources...difficult to find.'