Physicists Teleport Quantum Information inside Diamond
First, we should measure the volume of water, and then throw in a gold decoration and re-measure. Then write the difference between these results. The final step is to divide the weight of the jewelry by the difference in volume.
Those who do not want to perform complicated calculations, can check the authenticity of the gold chain or earrings, putting an ordinary fridge magnet on them . Gold is a diamagnet, which means that the magnet does not attract him. If our decoration adheres to it, we will know that we are dealing with a fake.
Discoloration and inaccuracy
Golden jewelry, even after years, should not lose its characteristic yellowish color. Gold ornaments, in turn, quickly begin to wear off, and discolorations appear on their surface . So if we want to check the authenticity of the decoration, we should carefully check it for changes in color . If we find one, probably the ornament is false.
We can also check the jewelry by assessing the diligence of its implementation . Gold ornaments are expensive products for demanding people, which is why they should be impeccable. If you can see shortcomings in them in the form of a rough surface or traces of soldering, it is most probably a carelessly made fake.
If the attempt corresponds to the description of the jeweler, it is worth checking where it was minted . A common practice among cheaters is to attach a clasp with a higher sample to inferior quality jewelry. So if the sign that the salesman shows us is on the clasp, it should raise our vigilance.you can visit this site for more knowledge 對戒.
Density of gold
We can easily check the authenticity of the jewelry we have already purchased by calculating the density of the metal from which it was made. Each ore has a unique, non-fake density, so if the calculations show that this parameter is about 19.3 g / cm³ , we can be sure that we are dealing with gold. We need a glass of water and a calculator to make the measurement.