Agate look-alikes

Cryptocrystalline Quartz (Chalcedony variety)

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Several rocks and minerals can be confused with Agate. 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

Chalcedony

SiO2

Also known as: Cryptocrystalline Quartz

Jasper

SiO2

Also known as: Opaque Cryptocrystalline Quartz

Opal

SiO2·nH2O

Also known as: Hydrated Amorphous Silica

Flint

SiO2

Also known as: Chert

Explore Agate

Overview

Full guide to Agate

Identification

Localities & Collecting

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