The listing did not change. What it says it is made of did.
Etsy sellers can edit a listing whenever they like, including the materials field. Same id, same title, same price, same photographs — and the thing you saved because it said sterling silver now says silver plated brass. Etsy sends no notification for an edit and keeps no visible history, so the only way to find out is to open it again and read carefully. Nobody does that.
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Art deco drop earrings, blue stone£34.00
sterling silver, glass
looks safelists sterling silver
saved on 12 June
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Art deco drop earrings, blue stone£34.00
silver plated brass, glass
changed from looks safe lists silver plated
same listing, 26 June
That is one listing, twice. It is the reason this is a service and not a script: the checking has to happen in the weeks you are not looking.
And the sorting, which is the easy half
Most costume jewellery has nickel somewhere. The materials field is free text, so “sterling”, “925”, “silver plated” and “silver tone” all turn up and only two of those are fine. Search here and everything is read for you and sorted safest first — with the seller’s own words quoted underneath and the word that decided it marked, so you can disagree.
A named risky metal beats a “nickel free” claim, because sellers often mean only the earring post. Every rule it uses.
Public Etsy listing data only — no Etsy sign-in, no permissions, nothing about anybody's Etsy account. Signing in here uses Google for the email address alone. What is stored.
Not medical advice. This reads what sellers typed and can be wrong in both directions. What it cannot tell you.