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https://www.myirishjeweler.com/guides/jewelry-education/why-sterling-silver-turns-black-or-green/
Make-up present on the skin or clothing is the most common cause of blackening or smudging. Cosmetics often contain chemical compounds which are harder than the jewelry itself. These compounds can rub off very tiny particles of metal which appear as jet black dust. Solution: Use a silver cloth to polish your jewelry.
https://glimmergirlblog.wordpress.com/2014/06/04/3-things-you-can-do-if-your-silver-is-turning-black-and-other-colours/comment-page-1/
Jun 04, 2014 · A well-used silver polishing cloth. It’s one of the biggest complaints jewelers get; “Why is my silver jewelry turning grey, black or brown?” Frequently people think there’s something wrong with their jewelry when this happens, but in truth, tarnish is a …Estimated Reading Time: 3 mins
https://orchid.ganoksin.com/t/black-spots-on-silver/41236
Black spots on silver. Jewelry Discussion. richardhopkins4. September 8, 2016, 3:38am #1. PLEASE HELP. I have worked with sterling silver for 25 years but recently encountered a new problem. I ordered a sheet of sterling from a ... pairs, before the black spots appeared, and may have to deal with returns.Estimated Reading Time: 2 mins
https://www.silver-collector.com/t/how-do-i-remove-these-black-marks/8333
Nov 19, 2009 · If the black corrosion spots remain, place the tray back in and let stand for another ten minutes and inspect again. If the corrosion is not gone after 30 minutes, have the tray professionaly refinished. If the corrosion has dissolved, you may notice a slight graying of the silver.Estimated Reading Time: 5 mins
https://www.thesprucecrafts.com/jewelry-stains-skin-2043646
Jan 14, 2020 · The most common stains from sterling silver jewelry are black, however, and occur when the silver tarnishes due to a reaction with gasses in the air. Some sterling pieces are coated with products like rhodium that help keep them from tarnishing, but the …Estimated Reading Time: 4 mins
https://www.smpub.com/ubb/Forum1/HTML/001214.html
The black spots are often removed with a slightly more abrasive compound such as tripoly or FFFF grade pumice and sometimes Semichrome Polish. I then finish off with a regular silver polish. There is always the chance that the use of aggresive compounds …
https://www.thriftyfun.com/tf58605161.tip.html
Apr 02, 2008 · Set the silver object on top of the aluminum foil, making sure the silver touches the aluminum. Heat the water to boiling, and pour it in the pan (*be careful not to burn yourself), completely covering the silver. Add baking soda (as needed); a good rule of thumb is 1/4 cup per 1 liter.
https://www.thesprucecrafts.com/silver-marks-and-terms-149394
Dec 18, 2020 · Marks on these pieces include 925 or Sterling. Any mark indicating a higher silver content, such as 950, would also qualify as sterling. Coin silver (900): Since it is only 90% silver, this alloy cannot be referenced as sterling. Items made from this alloy may include marks such as …
http://www.housecleaningcentral.com/en/cleaning-tips/tip/cleaning-silver.html
Dec 01, 2010 · Corrosion, which is a dark color, can be caused by moist or damp situations like from humidity or just storing your silver in the garage. Corrosion is a …
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