Here's why:
* Silver itself does not react with skin to cause discoloration. The green mark you're likely thinking of is caused by oxidation, a chemical reaction between metals and moisture, often in the presence of chemicals like sweat, perfume, or lotions.
* Sterling silver (92.5% silver, 7.5% other metals) can sometimes cause discoloration, but it's typically not green. The other metals in sterling silver, often copper, can react with skin and cause a darker, brownish-black mark.
* Silver plated jewelry, which has a thin layer of silver over a base metal, is more likely to cause green marks. This is because the base metal, often copper or nickel, is more prone to oxidation and will show through the thin silver layer.
To prevent discoloration, you can:
* Keep your silver jewelry clean and dry.
* Remove it before swimming, showering, or applying lotions.
* Store it in a cool, dry place.
If you are concerned about green marks, you can try wearing silver jewelry that is labeled as "tarnish resistant" or choosing silver jewelry with a protective coating.