I'm currently living in Canada (on an expat assignment from the US) and I'm visiting the states this weekend for a family event. I have been looking at rings in Canada and the US for sometime and finally settled on one. I trust the dealer (my family has gone to this jeweler in the past), the ring is beautiful, fair price, and no sales tax (my address is registered in a separate state).

I am planning to purchase during my trip and take it back to Canada on Sunday. Should I suspect any trouble at security or at customs (at the destination airport in Canada)? I plan to put the box in my carry-on bag.