Agate Geode (dyed)
Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/65449832@N00">R'lyeh Imaging</a> (CC BY 2.0)
Mineral NameAgate Geode (dyed)
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorsblue, dark blue, white
Transparencytranslucent
Type LocalityWorldwide, notably Brazil, Mexico, Uruguay
Mineral GroupSilicates
Usesdecorative, collector, jewelry
Associated Mineralschalcedony, quartz
Raritycommon
Description
A macro photograph of a geode's interior, showcasing a cavity lined with sparkling, vibrant blue quartz crystals, surrounded by banded layers of white and lighter blue agate. The intense blue color suggests artificial enhancement.
Geological Context
Geodes form in hollow cavities within volcanic or sedimentary rocks, where silica-rich fluids deposit successive layers of chalcedony (agate) and then quartz crystals inward over long periods.
