Edwardian 15ct Gold Round Green & White Enamel Locket Set With A Diamond

A little masterpiece in 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 that was made circa 1910. It has been GuillochéAn engraving technique in which a very precise intricate repetitive patterns or design is mechanically etched into an underlying material with very fine detail. Specifically, it involves a technique of engine turning, called guilloché in French after the French engineer “Guillot”, who invented a machine “that could scratch fine patterns and designs on… enamelled in green and white enamelA pigmented glass-like material used in powdered form and fused onto the metal surface of a piece of jewellery.. Guilloché is a design engraved on metal, through the use of a lathe, resulting in an elaborate pattern. These elegant and usually intricate designs are often covered by translucent enamels which serves to highlight the pattern. It is a time consuming and skilful technique. In the centre is a 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, clarity and carat weight of a diamond are the criteria jewellers use…. It opens to reveal a compartment for a photograph.