This includes me!
I think that in Canada there has been more resistance to lab than in the USA, my standard answer is 'I don't work with anything fake'
Of course, if someone wanted to pay me $15k for a simple 18k solitaire with the SJ logo in it using their fake stone, I might be willing to make an exception... But I might refuse to hallmark it...
That’s too bad because I think there is a huge untap market for this. But sooner or later, it will be filled with bench from India or China like everything else.