Green Onyx look-alikes
Banded Calcite (often marketed as Onyx Marble or Green Onyx)
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Open the appSeveral rocks and minerals can be confused with Green Onyx. 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
True Onyx
Banded Chalcedony (SiO2)
Also known as: Black Onyx, Sardonyx
Marble
Recrystallized Calcite (CaCO3)
Also known as: Calcite Marble
Travertine
Porous Calcite (CaCO3)
Also known as: Tufa
Serpentine
Magnesium Silicate (e.g., Antigorite, Lizardite)
Also known as: New Jade
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