Terbium (Tb) 24.26mm Metal Disc 99.9% Pure for Collection or Experiments

Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime, and euxenite. -Wikipedia Quarter not included

• Rare Earth Element - Size of US Quarter
• One Disc, measures 24.26 mm x 1.75 mm
• Precision machined from high purity metal, ground surfaces, and laser etched labels
• Approximate weight 6.97g