Early 20th Century French Platinum Cluster Target Ring set with Diamonds & Calibre Cut Sapphires

This white goldWhite 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). More ring is a well travelled ring over the years as it is clearly markedA small hallmark or punchmark either on the inside or outside of the shank which indicates the metal is platinum, gold or silver. If the metal is gold, it could also indicate the carat, e.g. 18 carat gold. More on the ouside of the shankThe circle of metal that attaches to the decorative part of a ring and encircles the finger. More with an owl which is the French import mark for 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) More white or yellow gold. Inside the shank is another 585 mark which is most likely a German mark for 15ct62.5% pure gold (or 625 parts pure gold and 375 parts other metals). Popular during the Victorian, Edwardian and Art Deco eras but was discontinued in the mid-1930s. More white or yellow gold, so I can only assume that when it was re testedA metal that has been acid tested to ascertain that it is gold, platinum or silver and, if such, further tested to give a near accurate assessment of gold content or silver content. This is necessary because the majority of antique jewellery is not hallmarked. More it was either downgraded to 14ct58.5% pure gold (or 585 parts pure gold to 415 parts other metals) More gold or upgraded to 18ct gold!  We sometimes have these conundrums with marks on antiqueFrom the Latin 'antiquus', meaning 'old and long in existence', it is generally used to refer to collectible artifacts of at least 100 years of age.
More jewellery. Either way it is a pretty ring and has been rub over set with a bright white transition cutDirect descendants of the Old European Cut, this progressive cuts saw an evolution toward a larger table, a lower crown, and a smaller culet than previous cuts. However, unlike later brilliants, the girdles of these stones remained unfaceted. Considered a precursor to both the Modern Round Brilliant and the Ideal cuts. 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 with smaller clawA precious metal prong used to hold a gemstone in place. More set diamonds around it. There are small baguetteFrench for “rod.” A type of rectangular step-cut comprising fourteen parallel, narrow facets running the length of the stone. Popular in mid-century eternity bands. More cut sapphires around the diamond and more that have been set in a scalloped design around the border and there is millgrained detail throughout.

There is lovely attention to detail in this pretty ring and now it has landed in England perhaps it will make a perfect engagement ring here!