cordierite
Dichroic gemstone material
Cordierite is a blue or violet mineral prized in geology and industry for its resistance to thermal shock—it can withstand rapid temperature changes without cracking.
Ceramics made from cordierite appear in catalytic converters and kiln furniture.
As a gemstone, transparent cordierite is called iolite and displays different colors when viewed from different angles.
Oxygen-bound crystal compound
- magnesiumAlkaline earth metal
- ironElement twenty-six
- crystalOrdered-atom solid
- dichroismPolarization-dependent color absorption
anisotropy · optical · pseudomorph · cleavage · hardness · transparency · vitreous · prismatic
Ornamental personal accessories
- cabochonDomed, unfaceted gemstone
- facetPlane on cut stone
- pendantSuspended jewelry ornament
- necklaceNeck-worn ornament
ring · earring · bezel · carat · cut · luster · violet · blue
Platy-mineral metamorphic rock
- gneissFoliated metamorphic rock
- retrogradeMoving in reverse direction
- pressureForce upon contact
- temperatureMeasured heat intensity
recrystallization · foliation · kyanite · garnet · biotite
Hardened clay objects
- refractoryResistant to heat/control
- substrateUnderlying supporting material
- insulationThermal transfer prevention
- high-temperatureVery great heat
silicate
Oxygen-bound crystal compound
dichroism · anisotropy · optical · pseudomorph · cleavage · hardness · transparency · vitreous · prismatic
jewelry
Ornamental personal accessories
necklace · ring · earring · bezel · carat · cut · luster · violet · blue · gem-quality
schist
Platy-mineral metamorphic rock
- gneissFoliated metamorphic rock
- retrogradeMoving in reverse direction
- pressureForce upon contact
temperature · recrystallization · foliation · kyanite · garnet · biotite
ceramics
Hardened clay objects
- refractoryResistant to heat/control
- substrateUnderlying supporting material
- insulationThermal transfer prevention