Osmium 99.9% 1/4, 1/2 and 1 Grain Pure Osmium Metal Bullion Cards.
They don’t come rarer than Osmium. And it is not only the rarest, but the densest stable element in the universe. It has a beautiful cold steely blue tinge and is very heavy to hold. When Osmium powder oxidizes in air, it can form osmium tetroxide, a very dangerous substance. For this reason, we only give solid osmium metal Crystalline. The first time ever Osmium has been sold in verified bullion cards. Take your pick of 1/4, 1/2 or 1 Grain. Grainmint always guarantees 3.6% EXTRA weight in our Non minted Bullion Cards.
AUTHENTICITY
Each one of our Collectibles comes with the GRAINMINT Hologram Certificate of Authenticity
EXCLUSIVITY
Each one of our Collectibles is Exclusive to and hand packaged and shipped by GRAINMINT
LIMITED
Every one of our Collectibles is numbered with a limited number of each being produced