Before buying gold – Alia Jewellery Sydney
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Before buying gold

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It’s the time of the year when people try their hardest to give loved ones the special gifts. We recommend to think about the gifts that have lasting value.


Gold will always be in fashion. Solid gold jewellery is a purchase that you will be able to enjoy for life, even generations, so before you make a purchase it is wise to educate yourself on the different standards of gold available. Below are the key facts everyone should know about gold and what to look out for as a shopper.

The key facts everyone should know about gold:


The higher the carat the more valuable the gold. The addition of other metals (alloys) to gold are used to increase the toughness and hardness of the metal, to change the colour i.e. white gold (palladium or silver) and rose gold (copper) and in the case of lower carat gold, to lessen the cost. 

18 carat gold is 75% pure gold (18 parts out of 24 pure gold and 6 parts alloy).

14 carat gold is 58.5% pure gold (14 parts out of 24 pure gold and 10 parts alloy).

9 carat gold is 37.5% pure gold (9 parts out of 24 pure gold and 15 parts alloy) .

The most widely used alloys for jewellery in Europe are 18 and 14, although 9 is popular in the UK. In the United States and Canada, most fine jewellery is 18 carat, but 14ct is the most popular, followed by 10ct (they do not sell 9ct gold). 

18 carat gold is ideal for allergy sufferers as it does not cause allergic skin reactions.


In most parts of the world, the terms carat and karat are used interchangeably (in the USA the designation for gold fineness is karat). Both carat and karat are derived from the word for the carob seed, which were used as measurements of weight in Oriental markets.

The weight of gold in jewellery is measured in grams. Most countries require every item of gold jewellery be clearly stamped with its carat which is usually controlled through hallmarking. Gold prices fluctuate depending on the market demand (in times of political uncertainty or currency fluctuation, many invest in gold or platinum for financial stability).


A hallmark is a guarantee of metal purity. Hallmarking is a system that originated in London at Goldsmiths’ Hall in the 14th century. In the UK and in Ireland there are three compulsory hallmarks applied to precious metals as a quality control: a sponsor’s (maker’s) mark, a fineness mark (purity), and an assay office mark. These marks establish the origin and fineness of the precious metal and ensures it has been accurately and independently tested (assayed).

In Hallmarking the metal and fineness mark for 18 carat is 750. The mark for 14 carat gold is 585. The mark for 9 carat is 375. In the United States, the Federal Trade Commission does not require a gold fineness stamp; however, if one is used, it must be accompanied by the manufacturer’s mark.

A branding mark should not be confused with a legal hallmark.


It is important to be aware that hallmarking is the law in many countries.

A jewellery shop can not sell something as 18 carat gold or 14 carat gold etc. unless it has been hallmarked (tested to prove that it is in fact the carat claimed or higher). So if someone advertises something as gold, look for the hallmark (750, 585...). If its not there you are perfectly within your rights to ask why? 

Beware of vague or misleading labels. Magazines and fashion retailers will often list something as "gold" when they should say "gold coloured" or "gold plated".


18 carat gold-plated jewellery is not 18 carat gold !!!!!

What is underneath? Will it make your skin turn green when the plating wears off? Is it a quality vermeil - hallmarked sterling silver (925) plated in carat gold or is it a cheap base metal?

Gold is much more valuable than silver and also heavier than silver, which is why it is  more expensive. Once you are happy with the metal and the price, then go for it.

Gold vermeil is a good way to have nice jewellery at a reasonable price, especially for large size statement pieces, but if you want to enjoy your gold jewellery for years to come, without fear of fading, then we recommend to invest in the real gold. Nothing replaces the look or feel of solid gold (gold plating on cheaper pieces, no matter how good, will eventually wear off).

Let’s sum up in more detail, what is vermeil, gold plate and gold filled jewellery.


Vermeil  is produced by coating sterling silver with carat gold. Sometimes referred to as gilded silver or gilt, vermeil is made using the process of electrolysis -electricity and an acid bath - to attach the gold to sterling.

To be considered vermeil, the gold should be at least 10 carat and be at least 1.5 microns thick. This layer of gold is thicker than that applied using the electroplating process used in gold plate, but it will still wear off over time. If it is hallmarked it will be 925 for sterling silver.


A: Gold Plated jewellery has a very thin layer of the precious metal electroplated to it. The thickness of gold (or silver if silver plated) is generally only a few microns thick. 18ct gold is typically used.

The metal underneath the plating is a base metal (pot metal or brass) that is able to conduct electricity allowing the bonding process to work. The plating will wear off.


Gold Filled is composed of a layer of gold bonded with heat and pressure to a base metal (or alloy) such as brass. The bond produced is a permanent one and the gold is thicker than that of gold plate.

A gold filled item must contain a fifth (1/20th) of its weight in gold and will have a quality mark that will identify its carat. For example, 14 carat Gold Filled will be marked as 14/20, meaning that the outer 1/20th of the piece is 14ct gold, the remaining majority of the piece is brass or base metal. This is not a hallmark and should not be confused with hallmarked precious metal.


Gold is a beautiful, valuable metal. It is an investment that will be enjoyed for life and passed on through the generations.  It is a luxury that holds its value.

Buying a friend or loved one an original piece of jewellery with the caveat that they may always sell it if they need extra money could be a diplomatic middle ground. In other words, buy them a gift that is literally intended to pay off at some future date.

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