What are the surface treatments on the jewellery?
Let’s face it: jewelry will always remain beautiful in its own way, and over time it will have history and character.
Oxidized sterling silver, white oxidized sterling silver, gold-plated sterling silver and pink gold-plated sterling silver are surface treatments that will lose coating or fade in color over time.
The jewelry with a surface treatment will experience wear and tear, and over time, and the shiny silver will begin to appear. Silver jewelry will eventually get a darker color. However, the dark color can be polished away with silver-gold cleaner. Rhodium plating is a black / dark varnish that lasts well, but if there are scratches or holes in the varnish, then they are permanent.
Read here how you can take good care of your jewelry.