gemstone
Yellow Agate
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vibrant yellow to amber color, waxy to vitreous luster, and microcrystalline structure with no visible cleavage.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, vibrant yellow to amber color, waxy to vitreous luster, and microcrystalline structure with no visible cleavage.
Formation & geological history
Forms by the deposition of silica from groundwater in the cavities of igneous and sedimentary rocks over millions of years.
Uses & applications
Widely used in jewelry, ornamental carvings, polished display specimens, and metaphysical crystal healing.
Geological facts
Agate has been prized since ancient times for amulets and seals, and yellow varieties often derive their color from iron oxide inclusions.
Field identification & locations
Easily identified by its waxy luster, conchoidal fracture, and resistance to steel blades; commonly found in volcanic regions worldwide.
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