sedimentary

Green Jasper

Microcrystalline Quartz (SiO2)

Hardness of 6.5 to 7 on the Mohs scale, green coloration due to iron impurities, waxy to vitreous luster, and a conchoidal fracture.

Identified October 23, 2026More sedimentary →

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, green coloration due to iron impurities, waxy to vitreous luster, and a conchoidal fracture.

Formed through the precipitation of silica-rich fluids in sedimentary or volcanic environments over millions of years.

Used primarily in lapidary arts for making cabochons, beads, ornamental carvings, and as a collector specimen.

Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and ability to take a high polish.

Identify by its opaque green color, conchoidal fracture, and lack of cleavage; commonly found in riverbeds and hydrothermal vein deposits worldwide.

Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion

Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Sandstone or Siltstone

Arenite (if sandstone)

Sandstone

Arenite

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)