Edwardian 18ct Gold Half Carved Half Hoop Five Stone Opal Ring

A beautiful 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) gold ring set five well matched precious opals with a good strong harlequin play of colour. Play of colour is the optical effort seen in Opals where they reflect a range of colours when light is shone on them. The best play of colour is where you can see a range of all the play of colours: yellow-green, orange-red and blue as seen in this ring. It is also known as harlequin. Normally this effort is best seen on black opals but this is an excellent example of harlequin play of colour on white opals. It has rose cutThe ‘rose cut’, defined by its rounded outline and multiple triangular facets, is one of the earliest diamond cuts, with its origins in sixteenth century Europe. A rose cut typically has a flat base and anywhere from six to twenty four facets, the latter known as a full rose cut. 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… pointsA unit of weight for a diamond, being one-hundredth of a metric carat. It is used for weights that are decimal fractions of a carat, and all figures after the second decimal point are, in the diamond and jewellery trade, generally discarded. on either side of the opals that add a little extra sparkle to this ring. It was made circa 1900-1910.