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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.