1 thought on “czech jewelry wholesale Will gold become black when it is burned?”
Tonya
cheap korean jewelry wholesale Gold will not be burned, and gold is difficult to oxidize with the air. After burning, it can only become brighter, fake gold or gold with too low purity. This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry. Gold identification adulteration 1, whether the gold has a white highlight. Masted the gold bar or gold jewelry with materials to observe the cut surface with a magnifying glass. If you see a white highlight, because the gold and crickets cannot be fused together, it means that the gold is mixed with 铱. 2, measured the proportion. In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry.
cheap korean jewelry wholesale Gold will not be burned, and gold is difficult to oxidize with the air. After burning, it can only become brighter, fake gold or gold with too low purity.
This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry.
Gold identification adulteration
1, whether the gold has a white highlight.
Masted the gold bar or gold jewelry with materials to observe the cut surface with a magnifying glass. If you see a white highlight, because the gold and crickets cannot be fused together, it means that the gold is mixed with 铱.
2, measured the proportion.
In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry.