kyanite
Metamorphic blue crystal
Kyanite is a blue aluminum silicate mineral found in metamorphic rocks, prized both as a gemstone and for industrial uses in ceramics and refractories.
Its distinctive property is varying hardness depending on the direction of cut—hard one way, soft another.
The blue ranges from pale to deep sapphire, though green and orange varieties exist.
Primary color; also sad
- azureLight sky tone
- sapphireBlue precious corundum
- cobaltElement twenty-seven
- indigoPlant-derived blue dye
cerulean · cornflower · aquamarine · teal · turquoise · ocean · sky · periwinkle
Oxygen-bound crystal compound
- polymorphEntity assuming multiple forms
- metamorphicUndergoing structural change
- schistPlaty-mineral metamorphic rock
- gneissFoliated metamorphic rock
crystallography · geology · mineralogy · bladed · prismatic · aggregate · specimen · outcrop
Domed, unfaceted gemstone
- facetPlane on cut stone
- carat200 milligrams exactly
- clarityState of being understandable
- lusterSoft reflected light
brilliance · cut · setting · bezel · pendant · necklace · earring · collector
Spiritual node in body
- throatNeck's inner passage
- healingRestoration of health
- meditationFocused attention practice
- energyPower to do work
alignment · balance · tranquility · intuition · communication · crystal healing · spiritual · calming
Varying with orientation
- directionalIndicating a path
- variableProne to fluctuation
- scratchSuperficial wound or mark
- resistanceCapacity to withstand force
cleavage · fracture · brittle · splintery · toughness · durability · test · scale
Resistant to heat/control
- ceramicFired clay material
- porcelainTranslucent fired clay
- kilnOven for hardening clay
- furnaceEnclosed heat-producing structure
crucible · insulator · abrasive · foundry · spark plug · brake pad · high-temperature · heat-resistant
blue
Primary color; also sad
indigo · cerulean · cornflower · aquamarine · teal · turquoise · ocean · sky · periwinkle · ultramarine
silicate
Oxygen-bound crystal compound
- polymorphEntity assuming multiple forms
- metamorphicUndergoing structural change
- schistPlaty-mineral metamorphic rock
gneiss · crystallography · geology · mineralogy · bladed · prismatic · aggregate · specimen · outcrop · deposit
cabochon
Domed, unfaceted gemstone
luster · brilliance · cut · setting · bezel · pendant · necklace · earring · collector · specimen
chakra
Spiritual node in body
- throatNeck's inner passage
- healingRestoration of health
- meditationFocused attention practice
energy · alignment · balance · tranquility · intuition · communication · crystal healing · spiritual · calming · attunement
anisotropic
Varying with orientation
- directionalIndicating a path
- variableProne to fluctuation
- scratchSuperficial wound or mark
resistance · cleavage · fracture · brittle · splintery · toughness · durability · test · scale · differential
refractory
Resistant to heat/control
furnace · crucible · insulator · abrasive · foundry · spark plug · brake pad · high-temperature · heat-resistant · alumina
- mineralsquartz, marble, granite, limestone, sandstone
- crystalsquartz, amethyst, diamond, citrine, rose quartz
- gemstonesdiamond, ruby, emerald, sapphire, pearl
- healing crystalsamethyst, rose quartz, citrine, crystal healing, healing stones
- ceramic materialsfeldspar, silica, kaolin, china clay, fire clay
- nesosilicatesolivine, garnet, zircon, topaz, titanite