Antique untreated aquamarine necklace by Aronson & Co
Early Australian jewellery is becoming so sought after, and here is a very exciting antique aquamarine necklace made by one of Australia’s most famous early jewellers, Aronson & Co that is made all the more exciting by being set with two natural unheat treated aquamarines.
Many gemstones have been heat treated for centuries to improve their colour and clarity and this is a worldwide accepted practice. It should be clarified that a gemstone that has undergone some form of heat treatment is still a natural gemstone from the ground and is not a synthetic/man made stone. Furthermore this treatment is completely stable and worldwide accepted as normal.
Aquamarines often have a natural inclusion called “rain” which are actually growth tubes when the aquamarine is being formed in the ground millions of years ago. Looking like rain – hence the name – heat treating the aquamarine will remove these inclusions. While there is of course nothing wrong with this, it is exciting to have aquamarines that are as pure as when they were found all those years ago.
This necklace dates from the early 1900’s and was made in 9 carat gold on a very elegant necklace that measures 41cm in length. Sitting proudly in the centre is a lovely oval aquamarine that measures 2.70 carats and then down a 4.5cm drop sits a cushion cut aquamarine that measures 2.35 carats.
The soft blue colour of the aquamarines will look so good sitting against the skin, and with a style that is as fashionable today as when it was made, this makes it the perfect piece of jewellery to wear for any occasion.
Stock# ET1307
Maker: Aronson
Circa: 1910
$Sold
Antique untreated aquamarine necklace
This antique untreated aquamarine necklace by Aronson & Co was made in the early 1900’s by one of Australia’s earliest jewellers.
Who were Aronson & Co?
Aronson & Co were one of the largest and most prolific Australian jewellers of the late 1800’s to the early 1900’s. In recent years their jewellery has become very sought after.
Originally formed and named Rosenthal, Aronson & Co in Melbourne in 1878, they produced all forms of jewellery until they closed in 1947.
Why do they heat treat gemstones?
What’s the difference between a heated sapphire and an unheated sapphire? And what does heat treatment do to a sapphire?
Many gemstones have been heat treated for centuries to improve their colour and clarity and this is a worldwide accepted practice. It should be clarified that a gemstone such as a sapphire or ruby that has undergone some form of heat treatment is still a natural gemstone from the ground and is not a synthetic/man made stone. Furthermore this treatment is completely stable and worldwide accepted as normal. Lately on the market there is a technique of glass filling or lead filling stones which will improve the colour of a natural gemstone. However this treatment is very unstable and the stone may look worse in a few years.
Aquamarines often have a natural inclusion called “rain” which are actually growth tubes when the aquamarine is being formed in the ground millions of years ago. Looking like rain – hence the name – heat treating the aquamarine will remove these inclusions.
Where can I buy antique jewellery in Australia?
At Kalmar Antiques in Sydney. Kalmar Antiques have been dealing in antique jewellery in Australia for over 35 years. With some of the largest range of any antique jewellery store not just in Sydney, but also Melbourne, Brisbane and Adelaide, there is also a watchmaker on site who used to work for Cartier and Rolex.
Click here to see more antique necklaces and pendants that are currently instore:
https://www.kalmarantiques.com.au/antique/antique-pendants/
Click here to see more antique Australian jewellery that is currently for sale:
https://www.kalmarantiques.com.au/antique/antique-australian-jewellery/
Here is a link to the beautiful Queen Victoria Building where we are:
