All Charms are Sterling Silver unless otherwise stated. Sellers who state that their Charms are hallmarked with .925 are infact misleading you. .925 is not a hallmark, only assay stamped charms can be listed as Hallmarked.
Any Charms under 7.78grams do not HAVE to carry hallmarks, due to their size.
For clarification on above please look at ;-http://www.theassayoffice.co.uk/hallmarking.html
Rest assured when buying from Gemstone Jewellery Boutique we will only sell quality Sterling Silver items.
If we can help further please email:- Gemstoneboutique@yahoo.co.uk