Osmium Iridium Gold Metal Alloy.
8 gram.
Osmium 36.74% Iridium 10.82% Gold 3.97% 
A valued collection for Precious Metal Collection PGM collection. 
Best Osmium Iridium Alloy for 99.9% Osmium 99.9% Iridium 99.9% Gold Refining.
Best Osmium Iridium Alloy for Pure Osmium Pure Iridium Pure Gold Refining.
Method Nickle Sulphide Fire Assay the best route for PGM complete metal extraction.