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Boulder Opal, from Australia (No.921)

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Boulder Opal, from Australia (No.921)Boulder Opal, from Australia

Measurements Approx.
Height - 2 cm
Width - 3.8 cm
Length - 3.9 cm



Forming in a great variety of forms, including massive (large pieces) botryoidal (grape-shaped) reniform (kidney-shaped) and stalactitic. Though unlike most other minerals, Opal never really forms crystals

Boulder Opal is found in Queensland, Australia and forms in cracks or coatings in and around ironstone/sandstone boulders. 


  


  

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