Question for Steve really, I had a stall at a craft fair last weekend and a lady came up and challenged me regarding hallmarking. Several small items, i.e like stud earrings we make as a "small gift" so are made out of thin silver, normally 0.6 (up to 1mm) so the silver content is a lot lower than the 7.78 grams, on the odd occasion we add copper to the design to make it look a bit bigger. If the silver content is under 7.78g and the copper makes it over, or a stone I suppose, does it need hallmarking. My understanding was that the silver content had to be over the 7.78g to need hallmarking. If I am wrong I suppose its the Tower for me again.