Osmiridium crystals per troy ounce

Osmiridium is an alloy of osmium and iridium found in alluvial deposits scattered sparsely around the world and which often contains smaller amounts of other elements mostly from the platinum group metals (PGMs). This material occurs naturally as small, very dense, silvery metallic pieces with a hexagonal crystalline structure. Osmium is the rarest stable element in the earth's crust and is also the most dense. 

This batch contains about 41.1% Os, 41.0% Ir, 14.6% Ru, 2.3% Pt, 0.7% Rh, and 0.3% Fe 

Unrefined from some sediment. Currently approx 18 x troy ounces available with a total supply of in excess of 100 troy ounces.