Half your luck if you found the platinum in the ground yourself
@johnnymoronik , that is a feat few people have been able to accomplish.
Whereabouts are you based? I know of only a few places in Australia that platinum has been found in large enough size to be called nuggets.
These localities are in NSW & QLD, in all other places in Aust it is only found in tiny grains, flakes, or microscopic traces.
And even in the US & Canada, I am not aware of anything larger than half an ounce ever being found.
The only place on earth where platinum nuggets of decent-sized are being regularly found is in Russia ( The stuff in South Africa comes
from deep underground veins, not shallow alluvial sources ).
The closest I came was back in the 1980s when I was dredging the bottom of the Buckland River in the Victorian Alps.
I found these heavy white metallic nuggets lodged in the crevices of the river bedrock which sent my heartbeat racing thinking they were platinum,
but on extraction and closer inspection, it turned out they were just gold nuggets covered in mercury which the old-timers had used during the gold rushes.