To tell if a necklace is real gold at home, use simple tests like the magnet test (real gold isn't magnetic), the water/float test (real gold sinks), and check for hallmarks (like 10k, 14k, 585) on the clasp. More advanced methods include the vinegar test (no discoloration) or the ceramic scratch test (leaves a gold streak), but for absolute certainty, a professional jeweler is best.
A different option is to fill a glass or cup with white vinegar and soak your gold there for 5 to 8 minutes before rinsing it with water. If the metal's colour has altered even a little, the gold is no longer pure; if the shine persists, the metal is still precious.
Magnet. This is a fast, non-desctructive test that works surprisingly well. Gold isn't magnetic, so if your piece is attracted by the magnet, you know it's fake. Like all tests, it won't catch every fake, but it's a really fast and effective test you can do at home.
Sluicing, dredging, river panning, and metal detecting are all great methods for gold prospecting. Be sure to try out each one to see which works best for you. With a little patience and practice, you'll be well on your way to finding gold! Copyright 2022 Detector Electronics Corp.
Vinegar Test: Put a few drops of vinegar on your gold and let it sit for 15 minutes. Real gold will not change color. Gold Discoloration: Gold is soft, so over time it can wear away. If you can see other colors in spots where the gold has worn away, this is a sign that your item is gold plated, and not real gold.
Hold your jewelry item under running water and rinse off the toothpaste. If your gold piece is real, the black spot will disappear making it look clean and shiny. If you can still see the black spot, this means the item is fake. Do note that this test is not 100% accurate.
The float test is a simple way to check if an item is likely real gold. How to Test: Fill a bowl with water and drop the gold piece in. Real gold is dense and will sink to the bottom, while fake gold or gold-plated items may float or hover just below the surface.
In carats, 333 gold corresponds to 8 carats. However, only 33.3% of a piece of 333 gold jewelry consists of pure gold; the remaining 66.6% consists of other metals, such as copper, silver, zinc or tin.
Real gold doesn't burn or get darker when heat is applied. If the piece of gold is real, the heat will melt the gold which is why gold can be molded and formed into different shapes without losing its color. Other metals like copper, iron, and brass change color and get darker when it is exposed to heat.
Scratch Test: Real gold leaves a gold streak when scratched against a ceramic plate. If the streak is black, it's likely fake. Float Test: Drop your chain in a bowl of water. Real gold is dense and should sink.
To perform this test, fill a glass with water and gently place the gold item into it. Genuine gold will sink straight to the bottom due to its high density, while fake gold will float or hover near the surface. This straightforward method offers a quick indication of authenticity.
Do all real gold chains have hallmarks? Not always. Some older or custom-made chains may lack stamps, and some marks can wear away. The absence of a hallmark does not automatically mean fake, but it's a warning sign to test further.
To perform the test, place your gold item into a small bowl and add a few drops of white vinegar. Pure gold will not react or change color because it's non-reactive. Fake or low-quality gold, however, may turn black or green.
Real Gold Always Sinks in Water
While solid gold typically sinks, thin gold pieces or jewelry with a hollow core might float or hover just below the surface. So, while gold has a high density, this test can still be misleading for certain pieces.
Solid gold pieces will have stamps like "14K" or "18K," telling you how pure the gold is. Gold plated jewelry usually shows marks like "GP" (Gold Plated) or "GEP" (Gold Electroplated). If you don't see any marks at all, that's often a red flag. Weight can be a good indicator.
If we consider the properties of gold, it is a tarnish-resistant metal, which means it will never get spoiled or turn black, as it usually does. It also shows low reactivity, which means the metal (gold) does not react when dipped into water, acid, or other compounds.
Gold-plated pieces may be marked 'GP,' 'GE,' or 'HGE. ' 'GP' or 'GE' means the piece is electroplated with a thin layer of gold; '18K GP' would indicate a piece plated with 18 karat gold.
As of early January 2026, 1 gram of gold in Australian Dollars (AUD) is roughly between AU$218 to AU$285, depending on purity, form (bar, coin), and the dealer's premium/discount, with the spot price fluctuating but generally around AU$216-AU$220 for 24k gold, while minted bars and premium products sell for more.
“Carat” as a spelling can refer to either gold purity or diamond weight, whereas “karat” can only refer to gold purity. The spelling “carat” predates the spelling of “karat”. “Karat” was introduced later to distinguishing gold purity from gemstone weight.