gemstone
Pink Agate
Silicon dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, pink to peach color, waxy to vitreous luster, microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.60 to 2.65.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, pink to peach color, waxy to vitreous luster, microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.60 to 2.65.
Formation & geological history
Forms by the deposition of silica from groundwater in cavities of igneous and sedimentary rocks, often over millions of years.
Uses & applications
Widely used in jewelry as pendants, beads, and cabochons, as well as for ornamental carvings and collecting.
Geological facts
Agate has been used since antiquity for ornaments and amulets, notably by the ancient Greeks and Egyptians. Pink varieties are often naturally colored by manganese or iron impurities.
Field identification & locations
Identified by its microcrystalline texture, hardness scratching glass, and waxy luster; commonly sourced from Brazil, India, and the USA.
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