A few years ago I had a razor coming from Turkey get lost. A Dorko @ about $100.00 USD. Paypal refunded my $ even though the seller had proof that he shipped it. It was an ebay item. Whenever I ship overseas I always do global express mail insured for full value. You get a tracking # and because of the insurance rates it is about the same $ as shipping global priority without the tracking #.

I bought some books, I seem to collect those too, from two different sellers in the UK. They were sent book rate via Royal Mail to the USA. In both cases the books took 6 weeks to finally get to my door. I've had book rate packages from UK arrive in half the time but in those two instances, with independent sellers, it took that long. I had given both up for lost . So there is still hope for your stone to get to you.