Olive Opal

 

Origin: Africa, Ethiopia

 

An unusual khaki-green coloured solid Opal from Ethiopia.

Opal is a hydrated amorphous form of silica, an unusual stone is the sense that it is classified as a mineraloid, unlike other crystalline forms of silica known as minerals. Opal is subcategorised in 4 groups that includes a variable complex of stones. These interesting yellowish-brown opals are Classified as Opal -AG (Amorphous-Gel) A type of Opal consisting of aggregated spheres of amorphous silica, hydrated with water in between these structures.

 

The photos were taken in bright sunlight to bring out their best colours.

Olive Opal - Ethiopia

SKU: ROUG047
$6.00Price
  • Olive Opal

    Origin: Africa, Ethiopia

    Size: 30 mm x 25 mm, 14 grams

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