According to American standards, any piece of gold less than 10 karat purity is classified as counterfeit, or counterfeit, and in the case of owning a piece of gold and the desire to disclose it if it is real or adulterated, the best way to do this is with the help of an expert seller In gold, jewelery, or resort to one of the following methods.
Gold detection methods
Visual examination
This is by looking for signs that distinguish gold, whether they are official seals indicating the degree of purity and caliber of gold, and the magnifying lens can be used to examine the gold piece, or by examining any changes in the color of the gold piece, especially those areas that rub the skin continuously, in the event that Any change or fading in the color, there is a high possibility that the gold piece is fake or painted.
Biting test
We often see those who do some gold pieces to reveal their purity, and this is through biting the gold piece with the effect of a strong pressure of teeth on the gold piece, then revealing the leaving the teeth for any traces on the gold piece, where the pure gold is distinguished by its color which leads to leaving Signs are clear when biting it, but this method may fail in the case of cutting gold-coated lead, as the lead is known for its softness close to the ductility of gold.
Magnet attraction test
Pure gold is not attracted to the magnet, and to detect gold in this way, consider choosing a large size magnet and a high attraction force, and place it close to the gold piece, in the event that the gold piece moves toward the magnet it is fake or gold-plated, except that some people take advantage of this feature to cheat in gold , By coating the cheap metals that are not attracted to the magnet with gold.
Ceramic plate test
This method may be one of the easiest and fastest ways to detect gold, but it may cause scratches and marks on the gold piece, and that is through the use of a ceramic plate without coating, and rubbing the gold piece with it, and if a golden line appears on the ceramic plate then the The gold is pure, but if it appears black, the gold is fake and plated.
Nitric acid test
It is important to be careful when using nitric acid to detect gold, and not to come into contact with the skin to avoid causing any burns, and that is by placing a piece of gold in a stainless steel container, and then pouring one drop of nitric acid on the piece of gold, if green appears as a result For the chemical reactions taking place, the piece is counterfeit, but if the white color appears, the piece is silver plated with gold, but if no interaction occurs, the gold is real and pure.
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