Art Deco 18ct White Gold, Diamond & Synthetic Sapphire Rectangular Ring
A very stylish 75% pure gold (or 750 parts pure gold and 250 parts other metals) White gold is an alloy of gold and at least one other white metal - most often nickel or palladium (both of which act as a bleaching agent to reduce the natural yellow colour of the gold). Jewellery made in the Art Deco era (1920-1935). ring that was most likely made in Switzerland. It is set with a good twenty five A 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. A 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. It is surrounded by A man-made material with essentially the same optical, chemical and physical properties as its natural counterpart, but completely artificial. Commonly used for calibré settings due to the colour matching possibilities. sapphires which in turn have a border of small diamonds. I am fascinated by synthetic stones as the process is brilliant and complex. The Parisian chemist Auguste Verneuil collaborated with Fremy on developing the method, but soon went on to independently develop the flame fusion process, which would eventually come to bear his name. In 1909, Vernueil realised that synthetic sapphires could be created with the addition of iron and titanium and in 1911, he and his employer, the Heller Company, were given two patents for this discovery. So this beautifully made ring is set with wonderful and very convincing synthetic sapphires. These stones were widely used in the 1920s especially in Europe between the wars. What a beautiful engagement ring this would be for the price!
Date & Origin
Centre diamond 25 points
Small diamonds approx total weight 21 points
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