Physical Properties of Thulium and Gold
Melting Point
1,545.00 °C
  
23
1,064.43 °C
  
99+
Boiling Point
1,730.00 °C
  
99+
2,807.00 °C
  
36
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray
  
Gold
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
194.00 MPa
  
99+
Speed of Sound
Not Available
  
2,030.00 m/s
  
99+
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available