18ct Gold & Platinum Diamond 1920’s Vintage Solitaire Art Deco Engagement Ring Fine Estate Jewelry


Fabulous vintage 18 carat gold and platinum  engagement ring

Set to the center with a gorgeous old brilliant cut diamond.

This engagement ring has platinum illusion shoulders.

The diamond is also in a platinum illusion setting that makes it appear much larger.

The 3.2 mm diamond weighs about 0.12 carat but it looks more like 1/3 carat due to the setting.

The diamond is clear & bright and sparkles beautifully.Colour H. Clarity SI

The head is 4.8 mm wide & it stands 5 mm proud of the shank.

It is size M 1/4 (UK), 6 1/2 (US) .It would easily re size.

The yellow gold shank is marked 18 ct & PLAT.

This antique ring dates to the art deco period.

It is in excellent condition. It weighs 2 grams

It comes in the presentation box illustrated.

This beautiful engagement ring looks stunning when worn.

our ref: 1699

Out of stock


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

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