Gold Bulletin

, Volume 10, Issue 1, pp 10–14

The colour of gold and its alloys

The mechanism of variation in optical properties
  • K. E. Saeger
  • J. Rodies
Open Access


The optical properties of metals, and particularly their high reflectivity, are related to the effect on their free electrons of the energy of the incident light, but a satisfactory explanation of the characteristic colours of gold and its alloys and intermetallic phases has become possible only since calculations could be made of energy band structures.

Copyright information

© World Gold Council 1977

Authors and Affiliations

  • K. E. Saeger
    • 1
  • J. Rodies
    • 2
  1. 1.DODUCO K.G.PforzheimWest Germany
  2. 2.Friedrich Uhde GmbHDortmundWest Germany

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