Opal 'Pineapple' (water-bearing silicon dioxide) View 1 (top)

Stuart Humphreys

Australian Museum

Australian Museum
Sydney, Australia

This pineapple-shaped opal is unique to White Cliffs in New South Wales. It was formed by the replacement of one mineral by another, known as a 'pseudomorph' meaning 'false form'. This purple and blue-green opal has completely replaced crystals of a previous mineral

View of opal 'pineapple' from above


  • Title: Opal 'Pineapple' (water-bearing silicon dioxide) View 1 (top)
  • Creator: Stuart Humphreys
  • Location: White Cliffs, NSW, Australia, White Cliffs, NSW, Australia
  • Contributor: Photographer: Stuart Humphreys, Photographer: Stuart Humphreys
  • Rights: Australian Museum, Australian Museum

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