An Edwardian multi-coloured zircon and diamond dress ring, circa 1910, the elongated oval-shaped plaque, set throughout with old brilliant-cut diamond, centring a line of graduated circular-shaped zircons of yellowish-orange, yellowish-green, brown and orangey pinks hues, between diamond diamond-set tapering shoulders, zircons approximately 10.60 carats total, diamonds approximately 1.50 carats total, mounted in platinum, ring size I 1/2 . Zircon is a naturally occuring gemstone, not to be confused with the synthetic gemstone 'zirconia'. Zircon reached its' popularity in the 1920s, but was commonly used in jewellery during the 19th century. Unheated, natural zircons are usually yellow, orange, brown, and green in hue. Zircon is prolific in Sri Lanka and Myanmar (Burma), but it is also found in France, Australia, USA, Cambodia and Thailand