Hi there, I am looking for some advice on some recent silver rings we bought - They were bought from an online UK company and were sold as sterling silver, however they weigh approx 10 grams, and are not hallmarked (just stamped 925)

So as far as i can see these can not be sold as silver, and must be referred to as white metal?

Most of the rings we bought had the full hallmarks as required and otherwise the company has been great, but we have been left with about 20 rings that we cannot sell as silver but were sold to us as such.

Does anyone know my rights on this matter? was I miss sold these? Any specific steps I should take to resolve this?

Thank you for your help