A 61.1g sample of Tantalum metal in the form of very unique metal foam.  Purity is 99.95%.  This material is used as a medical implant for operations like joint replacements due to Tantalum's bio-inertness.  Bone will actually grow into the foam.  This material is very rare and hard to find outside of a medical setting.  The foam displays the characteristic blue gray color of pure Tantalum metal.