What does polychroism mean?
Polychroism is a property of certain crystals or minerals that exhibit different colours when viewed from different directions. This phenomenon is typically due to the presence of multiple chromophores or variations in crystal structure. The term is primarily used in mineralogy and gemology to describe the unique properties of certain crystals or minerals. Polychroism is often used to identify specific minerals or to distinguish between similar minerals. The property is highly prized among collectors, as it can add to the aesthetic value of a mineral specimen. Understanding polychroism requires knowledge of crystal structure and the interaction of light with matter.
nounPolychroism refers to the property of certain crystals or minerals that exhibit different colours when viewed from different directions, typically due to the presence of multiple chromophores or variations in crystal structure.
- The property of exhibiting multiple colours.
- A specific instance of colour change in a crystal or mineral.
"The gemstone's polychroism made it highly prized among collectors, as it displayed a range of colours depending on the angle of the light."
"The mineralogist was fascinated by the polychroism of the newly discovered crystal."
"The polychroism of the opal made it a highly sought-after gemstone."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of polychroism
The term 'polychroism' originates from the Greek words 'poly', meaning 'many', and 'chroma', meaning 'colour'. The term has been used in the context of mineralogy and gemology since the 19th century to describe the property of certain crystals or minerals that exhibit multiple colours.
Usage notes
This term is primarily used in the context of mineralogy and gemology, and is often used to describe the unique properties of certain crystals or minerals.