mineralological
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Hardness: 6.5-7 (Mohs). Color: Brick red to brownish-red. Luster: Dull to vitreous when wet or polished. Structure: Microcrystalline/Cryptocrystalline. Specific Gravity: 2.58-2.91.
- Hardness
- 6
- Color
- Brick red to brownish-red
- Luster
- Dull to vitreous when wet or polished
Identified More mineralological →
Explore Red Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 (Mohs). Color: Brick red to brownish-red. Luster: Dull to vitreous when wet or polished. Structure: Microcrystalline/Cryptocrystalline. Specific Gravity: 2.58-2.91.
Formation & geological history
Formed via the deposition of silica from hydrothermal solutions or within volcanic rocks. Its red color is derived from iron (hematite) inclusions incorporated during formation millions of years ago.
Uses & applications
Commonly used for lapidary work, jewelry (cabochons, beads), decorative carvings, and as a popular stone for rock tumbling and metaphysical collections.
Geological facts
Jasper is an opaque variety of chalcedony. It has been used since antiquity for seals and amulets. The name comes from the Greek word 'iaspis', meaning spotted stone.
Field identification & locations
Identified by its deep red color, opacity (even on thin edges), and smooth, conchoidal fracture. Often found as water-worn pebbles on beaches or in riverbeds.
More like this
Other mineralological specimens
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineralological
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineralological specimen
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
mineralological specimen
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineralological variety
Red Jasper
Quartz (Silicon Dioxide) with Iron Oxide impurities (Fe2O3)
mineralological specimen