Abundance • Agent • Approximate • Approximately • Atomic • Conductivity • Contrast • Crystal • Cubic • Density • Earth • Emission • Field • G/cm³ • Galissard • Golden • Greek • Group • Have • Hexagonal • Hot • Lanthanide • M·k • Magnetic • Metal • Mineral • Most • Name • Nobel • One • Orthorhombic • Paramagnetic • Plasma • Point • Rays • Reacts • Scheele • Solid • Source • Structure • Swedish • Temperature • Transition • Trigonal • Units • Utilize • Violently • Which • White • Yes