Can anyone tell me if I need to get an item hallmarked please. The complete item is under the regulated weight for hallmarking silver, but I made a flower, like a big daisy and the middle bit is in gold which I dont know how heavy it is as it was a ball about 5mm across and flat at the back for the centre of the flower. Cant make another gold ball as I dont have any more gold to weigh it, so I dont know if its more than 1grm. Does gold weigh the same as silver, if so I can weigh a silver ball as I have quite a few of those.