Authentic Art Deco 2ct Old & Rose Cut Diamond Trilogy 18ct Gold Plaque Ring 1915

£3,900.00 £2,900.00

Simply stunning platinum & 18 Carat white gold Art Deco diamond ring

Vertically set with three gorgeous old European cut diamonds.

The diamonds give a very special sparkly and wonderful fire found only in genuine old cut diamonds.

The central oval diamond is 6.2 mm x 5.8 mm x 3.6 deep it weighs circa 0.90 carat.

The other two diamonds are about 4.5 across and 2.7 deep that’s approx 0.35 each

The total catat weight of all three diamonds is about 1.6 carat. Colour I – J. Clarity SI2.

The open plaque is surrounded by 28 pretty sparkling 2 mm rose cut diamonds

The rose cut diamonds have a mystical beauty.

All the diamonds are bezel set in platinum with pretty platinum millegrain edging.

The total diamond carat weight is in the region of 2 carat.

The head of the ring measures 22 mm x 18 mm.

The 18 carat gold shank is marked 18 CT & PLAT.

This ring dates to the Edwardian / Art Deco period.

This is a quality ring that weighs 4 grams.

It is size UK M, US 6.5 it would easily resize.

This antique ring is in excellent condition.

The shape of this spectacular ring makes it very comfortable & flattering to wear.

 OUR REF 11131

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Jewellery Facts 

Carat has two distinct meanings

Carat can refer to the quality or purity of gold –

pure gold ie  a metal that is 100% gold and nothing else but gold, is known as pure gold or 24 carat gold

So for example with a ring which is 18 carat ie 18/24s gold or put another way, 18 divided by 24 is 0.750  or 3/4

You may see jewellery marked 0.750 which is a some what modern way of writing 18ct as we say in the UK and 18k as they say in the rest of the world

The colour of pure gold is yellow. However if gold is mixed with other metals it can  become a silvery colour, known as white gold, or  pinky and is then known as rose gold

Secondly carat can refer to the weight of precious stones such as diamonds and sapphires

One carat is 1/5 of a gram – so 1/2 of a carat is 1/10 of a gram

A slightly outmoded way on expressing a diamonds weight is the point system. In this method a carat is said to be 100 points, so a 1/2 carat diamond for example would be a 50 pointer. You will find this system used in vintage books and catalogs, mostly when refering to antique diamonds – old cut, old European cut, old mine cut, old brilliant cut, swiss cut and rose cut etc

Platinum marks 

 In 1973 platinum was first covered by the hallmarking act,  A standard of 950 parts per thousand was introduced.

The platinum mark is an orb with a cross on the top all set within a pentagon.

First pieces  were marked  in January 1975 at the London assay office

Jewellery Periods

Georgian        Georges      1714  –  1837

Victorian        Victoria     1837 – 1901

Edwardian     Edward  V11   1901 – 1910

Belle Epoque    Garland   Art Nouveau   Art Deco

please contact Paula for more details and to discuss price

Email       the.chelsea.bijouterie@gmai