A neat Art DecoJewellery made in the Art Deco era (1920-1935). ring that was made in the early 1920s. It is 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) gold with a platinumDerives from the Spanish word 'platina' meaning 'little silver'. Acknowledged since the 1900s, platinum's durability and natural brightness has been and still is today highly treasured A metallic element prized for its rarity, whiteness, high tensile strength and insusceptibility to corrosion, platinum first became widely used in jewellery in the late ninete... More top. It has a criss cross design with small diamonds in between with a central 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... More. They are separated by millgrainA technique developed in the late 19th century as a textural effect to metal work on the edges or bezels of jewellery. That technique is referred to as millegrain (or mille grain or even milegrain). From the French word mille for a thousand, and from grain as the same meaning in English, it refers to what appears to be thousands of tiny beads upon a metal pr... More work. This is when the edges of the platinum have been worked with a knurling tool to produce tiny beads, hence the French name “Millgrain” meaning a thousand beads. It would make a lovely engagement ring.