Oops big snip
you can contact consumer and corporate affairs for trademark and stamping info.
If you quality stamp you must also have a trademark stamp on a piece. It is
not legal to quality stamp a piece without it.
Only a very few solder joins (3 in a sterling object) are allowable because
it lowers the alloy too much. Some people get around this by adding a fine
silver chunk to a silver object to counterbalance this.
In gold you can use plumb solders, that is solders which are the same carat
(gold percentage) as the gold alloy itself.
If you have a gold piece with a sterling rivet you may stamp the gold part
gold.(and the sterling rivet sterling) If the gold piece has a small piece
of sterling soldered to it you may only stamp the piece sterling, ie the
lower quality part. One might make a case (I would not want to try) that
one stamps in proportion to the proportions of the volumes present (like
cereal boxes), so 14k, s/s925 etc.
One of a kind work is seldom tested in real life (they smelt it and test
the melted and destroyed article) but production work is done regularly.
the Canadians are fairly reasonable however and after notifying you of your
error you have in general 7 days to fix it (get it out of the store,
otherwise fix the problem)
You must register a trademark, in Canada this is fairly easy, costs about
150 dollars and while the process is occuring you have the legal right to
stamp items. If your trademark is denied then you must stop using it. You
can however have access to the trademark database free at federal
government offices (this used to be unavailable without a lawyer and $500
fees to them)
There are now international trademarks available (can someone on the list
comment on this?), otherwise one might technically have to trademark in
every country you sold in.
You can sell anything if it is not quality stamped (customers don’t like
it) and you don’t claim in writing that it is a certain quality, ie if your
card in the shop says sterling you had better have a trademark but if you
only say silver you are safe (if potentially sleazy).
In the states it used to be (and still is) a kind of free for all and many
Americans don’t know that they are required to use a trademark (which they
didn’t used to) if they quality stamped-but now their federal governemnt is
being more hard nosed about it.
Box 1624, Ste M
Calgary, Alberta, T2P 2L7