sedimentary

Banded Jasper with Hematite or Quartz

Silicon Dioxide (SiO2) with impurities

AI-generated identification · may be incorrect

Hardness: 6.5-7.0 (Mohs scale), Color: Red, brown, white, and black bands. Luster: Vitreous to dull. Crystal Structure: Hexagonal (microcrystalline). Opaque with a conchoidal fracture.

Hardness: 6
Color: Red, brown, white, and black bands
Luster: Vitreous to dull

Identified May 16, 2026More sedimentary →

Explore Banded Jasper with Hematite or Quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6.5-7.0 (Mohs scale), Color: Red, brown, white, and black bands. Luster: Vitreous to dull. Crystal Structure: Hexagonal (microcrystalline). Opaque with a conchoidal fracture.

Formation & geological history

Formed through the accumulation of silica in hydrothermal veins or as a chemical precipitate in sedimentary environments, often associated with iron-rich deposits. This specimen appears to be of Precambrian or Paleozoic origin.

Uses & applications

Used primarily in lapidary arts for cabochons, beads, and decorative carvings. It is also a popular collector's specimen and used in landscaping or as aquarium stone.

Geological facts

The vibrant red color is typically caused by iron (hematite) inclusions within the cryptocrystalline quartz structure. Banded varieties are often found in iron formations known as BIFs (Banded Iron Formations).

Field identification & locations

Identify in the field by its hardness (cannot be scratched by a steel knife), smooth waxy feel when wet, and distinct colorful banding. Found globally in areas with ancient seafloor sedimentary deposits.