Silver Thimble or Holder?

I was given several thimbles, they were my Nans’. One seems to be silver but has no proper hallmarks, I have managed to find on the WWW thimble holders that look similar with the ‘loop’, as on a chatelaine. There are engraved numbers inside, they are quite clear but some of it is worn, the inside is very shiny like it may be silver. Hope you can make something out of the pictures and can tell me what it is made of. Many Thanks, Anne.
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2nd photo
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3rd photo, I do not know what the stone or bead is made of but there is one on the opposite side too.
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