Ytterbium Cube Yb 99.99% Element Cube Pure 10mm Density Cube for Element Collection Periodic Table Hunter, and More (0.39", Ytterbium)

Ytterbium Cube Yb 99.99% Element Cube Pure 10mm Density Cube for Element Collection Periodic Table Hunter, and More (0.39", Ytterbium)

0.39" 10mm Samarium Metal Cube Sm up to 99.9% Pure Periodic Table Element Engraved Density Collection Science Education Display Block Cube + Acrylic Case Box - 1PC

Acrylic Box Tray for Element Cubes Clear Case Periodic Table Bracket for Elements Collections Displays (1, for 10mm Cube-10pcs)