Art Deco diamond ring1.2ct Old Cut Diamond 18ct Gold Platinum Original 1920’s Trilogy Twist Engagement Ring Genuine Antique Estate Jewelry


Stunning antique diamond ring

Fabulous 18 Carat white gold & platinum diamond trilogy engagement ring

This antique diamond ring boasts three gorgeous old European cut diamonds

They are set within attractive asymmetric shoulders with eight pretty 1.5mm accent diamonds detail.

The centre old cut  diamond is about 4.5 mm that’s approx. 0.40 carat.

The outer diamonds are 4 mm giving a total weight of about 1.20 carat.

The diamonds are clear, bright & fiery.Colour H/I, clarity SI.

This antique diamond is 8.8mm wide & it stands 6mm proud of the shank.The three stones are 14mm across.

It is stamped 18 ct & PLAT, this vintage diamond ring dates to the Art Deco period.

This is a quality antique ring that weighs 4.6 grams

It is size M(UK),6 1/2 (USA) it would easily resize

This vintage engagement ring is in excellent condition.It comes in the presentation box illustrated.

This is a beautiful diamond ring which  just looks fabulous when worn.

Fine vintage estate jewelry

our ref: 1830 

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

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.

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