Using equipment and ingredients you already have you can test the authenticity of gold with a very simple test conducted in your own kitchen.
Ceramic test for gold.
585 would be 58 5 pure incidentally this is the same as 14 karat gold and 999 or 1 000 would be pure gold and thus the same as 24 karat.
Gold testing acid kit which may include either hydrochloric and nitric acids along with a dropper or particular samples for each type of gold karat acids 10k acid 18k acid 22k acid etc black gold testing stone you must thoroughly rub it with a 320 grit sandpaper wash and rinse it before making each test.
The european system is a little more straightforward.
If you can see a gold mark on the ceramic once you ve done this then the gold is real.
Rub the gold piece with the clean wash cloth to remove any dust dirt or contaminants.
If it leaves a black streak the item is not gold.
European gold is marked with the gold content expressed as a decimal.
Ceramic test dragging your gold over a ceramic plate is another quick and uncomplicated way to test your gold.
A golden yellow streak indicates real gold while a black streak shows that your item is fake or it s pyrite.
To test gold at home check your gold for a hallmark with gf or hgp meaning its gold plated while 24k or another number means its real gold.
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If there is any stuck on dirt or grease get the wash cloth wet and scrub it off.
If the streak is gold in color the item is likely gold.
Your bathroom scale will not work weigh two pieces of gold jewelry.
If you don t.
A porcelain scratch test can be performed by using an unglazed tile or ceramic plate and scratching the object on the tile.
The ceramic test showed gold lines immediately.
Using a balance scale or any scale that is able to measure small changes in weight i e.
Real gold will leave a gold streak on the ceramic while fake gold will produce a black streak.
The porcelain tile test also known as the gold scratch test requires a ceramic plate or a piece of unglazed porcelain tile.
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However if the mark is black then it is fake.