Image: Tõnis Saadre (CC BY-SA 4.0)
trigonalcommonSilicates
Jasper
SiO2
The image displays a polished, banded jasper specimen, predominantly reddish-brown with swirling patterns of white and darker grey/black, exhibiting an opaque appearance.
Jasper Physical Properties
Mohs Hardness
7Crystal System
trigonalLuster
dullStreak Color
whiteCleavage
NoneFracture
conchoidalSpecific Gravity
2.58Colors
reddish-brown, white, grey, blackTransparency
opaqueMineral Group
SilicatesUses
ornamental stone, jewelry, carvingsAssociated Minerals
chalcedony, chert, iron oxidesRarity
commonGeological Context
Jasper is a cryptocrystalline variety of quartz, often forming in sedimentary or volcanic environments where silica-rich solutions precipitate or replace existing materials, frequently colored by iron oxides.
