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The Mineral Garden

Green Opal Tumble

Green Opal Tumble

Regular price $10.00
Regular price Sale price $10.00
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This listing is for 1 large Green Opal 

Locality : Madagascar

Size approx  :  1"    (15g-30g)

  • Common Localities: Madagascar, Ethiopia, Peru, Australia
  • Composition: Hydrated silica   [SiO2 · nH2O]

   This is a type of opal that exhibits a green color due to the presence of nickel. It is a relatively soft stone, with a Mohs hardness of 5.5-6.5, and is typically opaque or translucent with a waxy to vitreous luster. Green Opal is formed through the precipitation of silica from solutions in volcanic rocks, and can be found in a range of locations around the world, including Madagascar, Ethiopia, Peru, and Australia although, each locality has their own distinct features.

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