mineral
Red jasper (likely polished/tumbled)
Jasper, an opaque microcrystalline variety of quartz/chalcedony (SiO₂), colored red by iron oxides
AI-generated identification · may be incorrectSmall, rounded, opaque orange-red pebble with dark inclusions or patches and a dull-to-waxy polish. Quartz hardness is about 6.5–7 Mohs; crystals are too fine to see, with no distinct cleavage and specific gravity near 2.6.
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Physical properties
Small, rounded, opaque orange-red pebble with dark inclusions or patches and a dull-to-waxy polish. Quartz hardness is about 6.5–7 Mohs; crystals are too fine to see, with no distinct cleavage and specific gravity near 2.6.
Formation & geological history
Jasper forms when silica-rich fluids fill or replace rock, with iron oxides producing red coloration; deposits occur in many ages and geological settings.
Uses & applications
Used for beads, cabochons, ornaments, and lapidary work; jasper is also collected as a decorative stone.
Geological facts
Jasper is a descriptive material name rather than a single mineral species; dark patches may be other minerals or surface features.
Field identification & locations
Look for an opaque, silica-hard stone with red coloration and mottling; it commonly occurs in veins, volcanic rocks, and sedimentary deposits worldwide. The photo is not detailed enough to confirm the exact variety.
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