page_title: Agate
hierarchical_section_title: Agate
caption_attribution_description: English: OLYMPUS DIGITAL CAMERA
context_page_description: Agate is a common rock formation, consisting of chalcedony and quartz as its primary components, consisting of a wide variety of colors. Agates are primarily formed within volcanic and metamorphic rocks. Decorative uses of agates are known to date back to Ancient Greece and are used most commonly as decorations or jewelry.
context_section_description: Agate /ˈæɡət/ is a common rock formation, consisting of chalcedony and quartz as its primary components, consisting of a wide variety of colors. Agates are primarily formed within volcanic and metamorphic rocks. Decorative uses of agates are known to date back to Ancient Greece and are used most commonly as decorations or jewelry.
caption: 19.6 kg (43.2 lb) Specimen of "Crazy Lace" agate from Chihuahua, Mexico; the specimen is 38.2 cm (15.0 in) wide
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