Onyx & Diamond Art Deco Cufflinks

A good pair of onyxOnyx is an opaque black variety of polycrystalline chalcedony quartz.  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, clarity and carat weight of a diamond are the criteria jewellers use… cufflinks, circa 1920, and set in 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) gold and 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….