A fine Art Deco style Emerald and Diamond ringAn elegant Art Decostyle cluster ring of plaque design, centred with a square step cut emerald measuring approximately 4. 5 4. 5 mm (estimated 0. 40 carats). The emerald displays a vibrant, lively green colour and is beautifully framed by diamonds. Flanking the centre stone are two baguette cut white diamonds measuring 4 2 mm, with a further ten round diamonds graduating from 1. 4 mm to 2. 4 mm. The total diamond weight is estimated at 0. 50 carats,