Nickel free necklace chains in Canada?

I have a necklace charm/pendant that I have been wearing on a stretchy necklace cord for nearly 7 years (replacing it every time it got too stretched out or damaged) but at this point I'd really prefer just a standard, metal (silver to match the pendant) chain. I found some necklace chains on Amazon that claim to be nickel free, but I'm very hesitant to order any of those as they could very well still have nickel in them. Does anyone know where I can get an empty necklace chain that's nickel free in Canada? Either from an in person store or online, as long as shipping to Canada isn't stupid expensive.