Because gold is a soft metal, it is easily scratched even with a light abrasive like baking soda.
Baking soda is abrasive, which is why it's great for cleaning sinks and toilets, but that abrasive quality can scratch gemstones and precious metals. So steer clear when it comes to cleaning jewelry.
Never use toothpaste, baking soda, or a commercial metal cleaner on gold. If you use these abrasives, you may scratch the gold.
A: Yes, cleaning jewelry with baking soda and vinegar is pretty simple. Mix 1/2 cup vinegar and two tablespoons of baking soda in a small bowl. Allow your jewelry to soak in the white vinegar and baking soda solution for a few hours.
Test Gold Using the Float Test
Take a cup or glass, fill it up with water, now bring the gold that you want to test. Drop it into this filled glass. If the gold floats, it is surely not real but if the gold sinks to the end of the glass then it is pure gold. The real gold will sink due to being a heavy metal.
Test With Nitric Acid
Make a mark deep enough to scratch through the top layer of gold. Carefully apply a drop of nitric acid to the mark, and determine if the mark turns green or milky. There will be no reaction if the jewelry is either gold or mostly gold.
Gold doesn't tarnish, but with constant exposure to sweat, body oils, make-up, and other chemical substances, it may become dull and sullied. The easiest method to give your gold back its unmistakable shine is to put your ornaments in a bowl of warm water with a dash of mild dish washing detergent.
Dish Detergent & Warm Water
The best homemade jewelry cleaning solution is a mixture of a few drops of Dawn dish detergent in warm, not hot, water. Let the piece sit in the solution for a few minutes, longer if it's very dirty, then gently scrub with a new, baby-size, soft toothbrush.
2. Why does the gold turns black? Gold turns black when some base metals alloyed with the gold react with or even to oxygen it can eventually discolor or even tarnish your gold jewelry. This Oxidation is working as a chemical reaction in which the electrons are lost.
Toothpaste is abrasive and has a hardness of around 3/4 on the Mohs Scale of Hardness. Metals such as gold and silver are softer, so toothpaste can actually scratch damage your gold and silver jewellery. Not to mention, the chemicals in the flavour oils used in toothpaste are corrosive to metal.
Baking soda, salt and aluminum foil.
Mix one tablespoon salt and one tablespoon of baking soda and mix with one cup warm water. Pour into the dish. The mixture will create a chemical reaction with the foil and bubble as it cleans the jewelry. Rinse with cool water and buff dry with a clean cloth.
If it's real gold it will not stick to the magnet. (Fun fact: Real gold is not magnetic.) Fake gold, on the other hand, will stick to the magnet.
Heat your gold jewelry with the lighter.
Apply the flame to the jewelry for about a minute or 60 seconds. Watch it closely for any changes in color. Fake gold will get darker, while pure gold will do the opposite: it will get brighter the hotter it gets.
If your gold piece turns black or green when the vinegar is on it, or if it starts to smoke or fizzle at all when the vinegar touches it, it is most likely not real gold. If your gold piece does not change colors and does not fizzle or react to the vinegar in any way, it is probably real.
How to Test Gold With Vinegar. Apply a few drops of white vinegar to your gold jewelry. Real gold will not change color, but vinegar can cause fake gold items to react and change color.
Polishing Gold
Standard commercial gold polishes will quickly and safely clean gold jewelry when applied with a soft chamois cloth. If your gold jewelry has begun to tarnish, you can remove the tarnish by making a lukewarm water and dish soap mixture with just a few drops of ammonia.
3) Windex and Hydrogen Peroxide
While not every household stores hydrogen peroxide, you can pretty much find Windex or another generic window cleaner in every home. These two partners in crime can easily help you clean your gold or silver diamond ring.