cheap wholesale silver jewelry Is there a way to get pure gold black?

wholesale fashion jewelry distributors Burning. Pure gold will not turn black by fire, such as 24K gold and 999 thousand feet; black. Under the influence of burning in the fire, it was still Huang Tongtong at first, but when it was cooled, the whole body turned black.
The reasons for contacting chlorine substitutes, lactic acid, urea ammonia and other substances. Once these substances are in close contact with gold, they will cause black dot or strip -shaped black marks on the gold surface. If the contact time is long, it will be It will cause gold corrosion.
Golden jewelry maintenance needs attention:
1. The chemicals of cleaning essence will change the color of the gold, so you should take off the gold jewelry before doing cleaning; Volatile material contact, otherwise it is easy to cause gold ornaments to fade;
3, the gold decoration should be removed when swimming, so as not to encounter the seawater or pool water, the surface layer produces chemical changes; Put it into the jewelry box to avoid rubbing each other.