Dysprosium is a chemical element with symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime.

Atomic Weight:  24334
Density:        344 g/cm3
Melting Point:  3434°C
 Boiling Point: 323 °C