gold
According to American standards, any piece of gold with a purity of less than 10 carats is categorized as gold or fake, and in the case of possession of a piece of gold and the desire to disclose it if it is real or fake, the best way to do this is by using expert sellers Gold, jewelry, or resort to one of the following methods.
Methods of detection of gold
Visual inspection
This is done by looking for signs that distinguish gold, whether the official seals indicate the purity of gold and caliber, and can be used to enlarge the lens to examine the piece of gold, or by examining any changes in the color of the piece of gold, especially those areas that are constantly under the skin. Any change or malfunction in the color is very likely to be a piece of gold forged or painted.
Biting test
We often see some of the gold pieces to reveal their purity, and that is by biting the gold piece with the effect of strongly compressing the large teeth on the gold piece, then revealing the leaving of the teeth to any traces on the piece of gold, clear signs when bitten, but this method may fail in the case of cut gold-plated bullets, where the lead is known as the billionth near the softness of gold.
Magnet attraction test
Pure gold is not attracted to the magnet, and to detect gold in this way consider the choice of magnets of large size and high attractiveness, and placed close to the piece of gold, if the movement of gold piece towards the magnet is fake or gold-plated, but some exploit this property cheat in gold by coating cheap metals that are not attracted to gold magnets.
Ceramic plate test
This method may be the easiest and fastest way to detect gold, but it may cause the leaving of scratches and signs on the piece of gold, through the use of ceramic plate without coating, and scratched the piece of gold, if a golden line appeared on the ceramic plate, gold is pure, but if the color appears black, the gold is fake and plated.
Nitric acid test
It is important to be cautious when using nitric acid to detect gold, and not to touch the skin to avoid causing any burns, by putting the piece of gold in a stainless steel container, and then poured one point of nitric acid on the piece of gold. For the chemical reactions that occur, the piece is fake. If the white color appears, the piece of silver is gold plated, but if there is no interaction, the gold is real and pure.