An unusual 15ct62.5% pure gold (or 625 parts pure gold and 375 parts other metals). Popular during the Victorian, Edwardian and Art Deco eras but was discontinued in the mid-1930s. gold bracelet with six carved rock crystal reverse intaglios of different game birds. Quail, Duck, Pheasant, Partridge, Grouse and Snipe.
A reverse crystal intaglioAn engraved stone, the opposite of a cameo, with a recessed design cut below the surface of the stone. Intaglio designs are common for signet rings and fob seals. is a rock crystal cabochonA polished, not faceted, dome shaped stone - either round or oval with a flat polished base, primarily used as a cut for phenomenal stones such as cat's eyes and stars. with an intaglio carved into the flat back. The intaglio was also painted realistically with oils so, that when viewed through the top, the image appears three dimensional. Finally, the back was sealed with mother of pearlThe iridescent inner layer of certain molluscs such as oysters or abalones which is used as a decorative inlay. in order to preserve the painted areas. The technique originated in Belgium c. 1860 and is attributed to an artist named Emile Marius Pradier. This technique was also practiced in England by Thomas Cook and his descendants who made crystals for Lambeth & Co.
Production of a reverse crystal intaglio begins with the mining and cutting of fine rock crystal from Brazil or Madagascar. A well-formed cabochon is the key to a beautifully made reverse intaglio and the tedious process of hand polishing it to perfection had to be completed before the design work could begin. A watercolour of the image was painted on the underside of the cabochon and an oil and diamondA precious, lustrous gemstone made of highly compressed carbon. Diamonds are one of the hardest materials known to mankind. Colours of diamonds range from colourless, yellow, orange and brown to almost black. Natural coloured (or ‘fancy’) diamonds can be extremely rare. The cut, colour,}