I was mining materials to make some steel to sell and get some money, I mostly don't use the diamond pickaxe but this time I did, by the time I got 45 stone my gmod crashed and i lost my diamond pickaxe, is it possible to get a refund?

I was mining materials to make some steel to sell and get some money, I mostly don't use the diamond pickaxe but this time I did, by the time I got 45 stone my gmod crashed :( and i lost my diamond pickaxe, is it possible to get a refund?