Geode fragment look-alikes
Chalcedony/Quartz
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Open the appSeveral rocks and minerals can be confused with Geode fragment. 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
Thunder Egg
SiO2 (often with other minerals)
Also known as: Lithophysa
Agate Nodule
SiO2 (microcrystalline quartz)
Also known as: Agate
Vug
Variable, depending on mineral infilling
Also known as: Crystal-lined cavity
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