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Australian Natural Opal

Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals

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Natural Opal

Dimension : 6.50mm x 6.1mm

Weight : 0.35Cts

Shape : Semi Ovel

Treatment : Unheated/ Natural

Mineral : Australia

 

 

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