BIRKS 1920’s Platinum 1ct diamond Ring Art Deco Vintage Three Stone Trilogy Antique Ring

£4,500.00 £3,990.00

This is a truly stunning Art Deco platinum diamond trilogy ring by Birks of Canada.

The three gorgeous brilliant cut diamonds are set in a beautiful ornate gallery.

The hand crafted floral gallery is decorated with a further sixteen sparkling 1.2 mm diamonds.

The centre 4.5 mm diamond is flanked by two 4 mm diamonds.

They are half collet & claw set in platinum that shows them of to perfection.

The diamonds are of particularly fine quality.

They are clear & bright with immense sparkle & fire.Colour H, clarity VSI.

The sixteen accent diamond are of the same high quality.

The total diamond weight is about one carat.

The solid shank is engraved BIRKS PLAT.

It also has a personal engraving April 2nd 27.

The size is L (UK), 6 (USA) & 51 (European).

This quality diamond ring weighs 4.5 grams.

This authentic Birks ring is in exceptional original condition and a genuine antique diamond ring

This wonderful Art Deco period diamond ring looks truly sensational when worn.

our ref: 12101

The origin of Birks jewellery is  Henry Birks  who started his business in Montreal, Saint Jacques Street in in 1879


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Jewellery Facts for antique and Vintage Jewellery

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      From about 1880 to 1915  ( the start of the first world war)

Garland   Art Nouveau   Art Deco

please contact Paula for more details and to discuss price

Email       the.chelsea.bijouterie@gmai