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Dendritic Opal look-alikes

SiO2·nH2O with manganese dendrites

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Several rocks and minerals can be confused with Dendritic Opal. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.

Similar rocks to compare

Dendritic Agate

SiO2 (chalcedony) with manganese or iron dendrites

Also known as: Tree Agate, Moss Agate (though Moss Agate often has chlorite inclusions)

Dendritic Chalcedony

SiO2 (chalcedony) with manganese or iron dendrites

Also known as: Tree Chalcedony

Picture Jasper

SiO2 (microcrystalline quartz) with various mineral inclusions

Also known as: Landscape Jasper

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