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 check if gold is real with vinegar. Gold is a stable metal and does not react with oxygen corroding. Test gold using the float test. Then, lightly rub the gold against the foundation.
Yes, real gold will not change its properties with the action of vinegar. Real gold will leave a gold mark or trail. After you’re done with the dropper.
Gold is an incredibly dense metal. Pour the white vinegar into your glass cup. Place the gold ring into the cup of white vinegar.
There should be no changes in the soft yellow color of your item. Take an unglazed ceramic plate or piece of tile and scrape a piece of gold across its surface. However, if the jewelry item starts to fizzle or smoke up.
Take a few drops of vinegar and place it on top of your bullion or jewelry. To see if your gold is real, try scratching it with an unglazed ceramic. Once the foundation dries, press the gold into your skin.
Pour some nitric acid on the scratched surface of the gold. Because it is stable, it will not change. Let the gold ring sit in the cup of white vinegar for approximately 15 minutes.