sedimentary

Green Jasper

Microcrystalline Quartz (SiO2)

Mohs hardness of 6.5 to 7, dark green color with subtle banding, waxy to vitreous luster, and conchoidal fracture.

Identified November 11, 2026More sedimentary →

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Physical properties

Mohs hardness of 6.5 to 7, dark green color with subtle banding, waxy to vitreous luster, and conchoidal fracture.

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

Used primarily in lapidary work, ornamental carvings, cabochons, and gemstone jewelry.

Jasper has been used since ancient times for talismans, seals, and weaponry components due to its toughness.

Identified by its dense green color, lack of cleavage, and ability to take a high polish; commonly found in riverbeds and mountainous regions.

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

Sandstone or Siltstone

Arenite (if sandstone)

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Sandstone

Arenite

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)