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wholesale jewelry distributors in houston
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wholesale body jewelry vendors When a certain heat is reached, it will change color.
This gold bars or gold jewelry burned for a while. Since the oxidation reaction of the oxygen in the air will be combined with oxidation, the gold bars with insufficient purity will become gray; and the color of pure gold will be red after the fire is grilled. Hamsium, the steam emitted when the gold is melted is green, and its gold powder is usually brown during the smelting process. If it is cast into a thin piece, it can also transmit green light.
The expansion information:
The cleaning method of gold:
1. The gloss of the gold jewelry can be applied to a layer of nail polish thinly on it.
2. If there are black silver films on the surface, 2 grams of salt, 7 grams of soda, 8 grams of bleaching powder, 60 ml of clear water, are made into a "golden device cleaning agent", put the gold jewelry in a bowl, and the golden jewelry is in a bowl. Pour in the cleaning agent. After 2 hours, remove the golden jewelry, rinse with water (preferably not hard water), buried in the wood chips to dry, and then wipe it with a soft cloth.
3, the ring inlaid with a cotton roll with a popsicle or match stick, wet the gemstone and its frame in the mixed fluid of the dew and glycerin, and then use the velvet cloth to brighten the ring. Do not scrape it with a kind of sharp objects.
4, salt and vinegar mixed synthetic cleaning agent, using it to wipe the pure gold jewelry, which can make a long time.
5, wipe or scrub with hot rice soup with hot rice, can also restore gloss.
6, scrubbing with ammonia water.
Reference materials: Baidu Encyclopedia-Gold