Diamond
E39591
Diamond is a precious crystalline form of carbon renowned for its exceptional hardness, brilliance, and use in jewelry and industrial applications.
Statements (60)
| Predicate | Object |
|---|---|
| instanceOf |
allotrope of carbon
→
crystal → gemstone → mineral → |
| atomicStructure |
each carbon atom is tetrahedrally bonded to four other carbon atoms
→
|
| birthstoneFor |
April
→
|
| bondingType |
covalent
→
|
| chemicalFormula |
C
→
|
| cleavage |
perfect in four directions
→
|
| color |
can be black
→
can be blue → can be brown → can be green → can be pink → can be yellow → typically colorless → |
| crystalClass |
hexoctahedral
→
|
| crystalHabit |
cubic crystals
→
dodecahedral crystals → octahedral crystals → |
| crystalSystem |
cubic
→
|
| density |
about 3.5 g/cm³
→
|
| dispersion |
about 0.044
→
|
| electricalConductivity |
generally electrical insulator
→
|
| formationDepth |
typically 140–190 km below Earth’s surface
→
|
| formationEnvironment |
high pressure and high temperature in Earth’s mantle
→
|
| fracture |
conchoidal
→
|
| hardnessMohs |
10
→
|
| hardnessMohsScale |
hardest natural material
→
|
| luster |
adamantine
→
|
| majorProducerCountry |
Australia
→
Botswana → Canada → Democratic Republic of the Congo → Russia → South Africa → |
| occursIn |
kimberlite pipes
→
lamproite pipes → |
| opticalEffect |
fire
→
high brilliance → scintillation → |
| opticalProperty |
isotropic
→
|
| refractiveIndex |
about 2.42
→
|
| relatedAllotrope |
fullerene
→
graphene → graphite → |
| symbolism |
associated with durability and eternal love
→
|
| syntheticProductionMethod |
chemical vapor deposition
→
high‑pressure high‑temperature process → |
| tenacity |
brittle
→
|
| thermalConductivity |
very high thermal conductivity
→
|
| tradeClassification |
precious stone
→
|
| transportToSurface |
brought to surface by volcanic eruptions
→
|
| usedFor |
abrasives
→
cutting tools → drilling bits → grinding and polishing → heat spreaders in electronics → high‑performance optical components → jewelry → |
Referenced by (4)
| Subject (surface form when different) | Predicate |
|---|---|
|
Jared Diamond
→
Jared Diamond → Neil Diamond → |
familyName |
|
Jarden Corporation
→
|
ownsBrand |