Hi Otis
The issue of labelling the origin of goods and of safety of goods are complex, and governed by the relevant legislation in the country of sale.
In the EU (at the moment) it is not a requirement to label imported goods with the country of origin (whereas it is a requirement in China, Japan, and the US for example). And even if one chooses to attach such a label, there is another issue of 'added value'. If you import raw materials or components, then fabricate an item, where was it made? The answer in many places is 'wherever the greatest value was added'. So if you import a Chinese paperweight into country X, polish the base, stick on a label, and put it in a fancy box, you may well have added more value that the original cost - and can label it 'Product of X'. I recall that there were masses of paperweights for sale in IKEA a few years ago for £1 each ( I think), which were transparent glass blobs with random bubbles inside, in various colours. They looked to me to be of Chinese origin (matt ground bases that were not quite circular), but carried no labels.
Regarding safety, for new items in the UK I think this might fall under the Sale of Goods Act, and be the responsibility of the retailer. So they would need to check that a paperweight was 'safe' before putting it on the shelves, which would mean checking and testing for any risks (not sure what if anything this might be with a glass paperweight, but for example being radioactive, or emitting poisons) and being able to prove that they had done so.
There is a significant problem with labelling paperweights, of course - the labels often fall off, or get removed because they interfere with the design.
Alan