Art Deco Platinum, Onyx & Diamond Marquise Shaped Ring

This ring is a classic Art DecoA movement within the arts between the two Great Wars (1920-1935) across Europe and the US, characterized by its clean, geometric designs. The aesthetic was intended to celebrate an age of progress and the modernity of the machine. More design, simple yet so elegant and typical of the mid-1920s. The shankThe circle of metal that attaches to the decorative part of a ring and encircles the finger. More is 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 with a marquiseAn oval or elliptical gemstone cut which has pointed ends. Also called a Navette shape. More shaped plaque of onyxOnyx is an opaque black variety of polycrystalline chalcedony quartz.  More set with a half caratThe unit of weight for a diamond or other gemstone and also for a pearl. Abbreviated 'ct', 1 carat is equal to 0.2 grams. In reference to gold, a unit of purity or fineness of gold and gold alloy, expressed as a number out of 24 parts by weight, e.g. '24 carat' signifies pure gold, '18 carat' 18/24th gold in the alloy, et cetera.  Also abbreviated as 'c... More 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 in the centre. The shouldersThe point on a ring where the central section meets the shank or band, often carved, decorated or inlaid with small diamond accent stones. More have each been set with three small diamonds. The pierced platinum galleryA strip of metal that is pierced with a continuing pattern, often framing vertical lozenge-shaped openings within an upper and lower band. Such strips are used by jewellers to make a claw setting for a finger ring after slicing the strip horizontally so that it becomes a series of points which hold the stone. The complete gallery is called 'closet' and the h... More beneath the onyx is a little work of art in itself. The ring sits low on the finger so it is a practical ring to wear.