Has anyone sold to / bought from Sparky?

I got an offer to buy several things from the bistro from "Sparky" of Hong Kong, who says s/he has bought a lot off the bistro. Can anyone confirm this is a real person? I'm just a little weirded out by sending stones overseas (I'm in the US)
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Just wanted to follow up on this. I had a very pleasant transaction with Sparky(/Wingo), with good communication and no problems sending/receiving the stones. I recommend this buyer!