Onyx Marble look-alikes
Banded Calcite (Travertine)
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Open the appSeveral rocks and minerals can be confused with Onyx Marble. 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
Cryptocrystalline Quartz (Chalcedony variety)
Also known as: Sardonyx (if bands are red/brown and white)
Marble
Metamorphosed Limestone/Dolomite
Also known as: Recrystallized Limestone
Travertine
Porous Calcite
Also known as: Tufa (if porous)
Alabaster (Gypsum)
Fine-grained Gypsum
Also known as: Gypsum Alabaster
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