Mineral
Jasper or Agate
Silicon dioxide (SiO2)
Hardness 6.5-7, multicolored (green, brown, gray), waxy luster, microcrystalline quartz
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Physical properties
Hardness 6.5-7, multicolored (green, brown, gray), waxy luster, microcrystalline quartz
Formation & geological history
Formed from silica-rich fluids filling cavities in volcanic or sedimentary rocks
Uses & applications
Commonly used in jewelry, lapidary arts, and as a decorative stone
Geological facts
Jasper is an opaque variety of chalcedony, often featuring complex patterns due to mineral impurities.
Field identification & locations
Identifiable by its hardness, opacity, and intricate banding or patterns. Common worldwide.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral