Definition of chatoyancy in US English:

chatoyancy

noun

  • See chatoyant

    • ‘The enamel has incredible luster and chatoyancy with an overall hue of dark metallic golden bronze.’
    • ‘They discovered that embedded within the rippling chatoyancy lies a record of the tectonic movements that shaped the Earth.’
    • ‘There are many stones which exhibit chatoyancy to various degrees.’
    • ‘It is commonly fashioned into cabochons which is a cut that maximizes the chatoyancy of the mineral.’

Pronunciation

chatoyancy

/-ənsē/