Black Tourmaline look-alikes
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
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Open the appSeveral rocks and minerals can be confused with Black Tourmaline. 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
Onyx
SiO2 (cryptocrystalline quartz)
Also known as: Black Onyx
Jet
Carbonaceous material (fossilized wood)
Also known as: Black Amber
Obsidian
Amorphous SiO2
Also known as: Volcanic Glass
Augite
Ca(Mg,Fe)Si2O6
Also known as: Common Augite
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