Putting some chalk in the jewelry box can not only keep the jewelry dry, but also prevent it from turning black. The same principle applies to the use of other desiccants. You might as well try. I'm trying myself, but there is no scientific explanation for this statement and no scientific evidence to prove that this phenomenon exists.
If you really want to keep your jewelry shiny, you can always maintain your jewelry to be on the safe side, so that your jewelry can be better maintained. Just put some chalk in the jewelry box. If this practice is different from the characteristics of jewelry, it will not work for your jewelry, but will affect the luster of jewelry.
Many jewelry will fade slightly if worn for a long time, but they are not willing to spend money. You can make your jewelry "better" in this way. It is suggested that we put the prepared chalk into a chalk box in sections. Only in this way can chalk play its role.
In this way, jewelry can also avoid blackening due to oxidation, and chalk has just such a function. After you put the chalk in, it will take some time to show the effect, but the replaced color may be a little different from the newly bought one, but it is definitely much better than the black oxide color.
To sum up, I think as long as you put some chalk in the jewelry box, you can keep the jewelry shiny. I suggest you try it, but you should also take care of your jewelry in other ways. Only in this way can you make jewelry as good as new.