Image: Wikimedia Commons

diamond

Allotrope of carbon often used as a gemstone and an abrasive

Instance of: mineral species
1
Sources
1.Stated in The IMA List of Minerals (March 2019)
View statement on Wikidata ↗
Subclass of: carbon-silicon family
, covalent network solid
, native element mineral
+2 more

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Diamond is a mineral form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is a tasteless, odorless, strong, brittle solid, a poor conductor of electricity, colorless in pure form, and insoluble in water. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools.

Overview

All data

139 statements · 27% with external sources · numbers in brackets are citations

Streak color: white
Mohs' hardness: 10
2
Sources
1.Stated in MinDat
2.Stated in The Merk Index 13th Ed.
View statement on Wikidata ↗
Made from material: carbon
Nickel-Strunz 9th edition (updated 2009): 1.CB.10a
1
Sources
1.Stated in mineralienatlas.de
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Formula: C
1
Sources
1.Stated in rruff
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Crystal system: cubic crystal system
1
Sources
1.Stated in Phase diagrams of the elements
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Point group: cubic-hexoctahedral
Cleavage: {111}
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 1.CB.10a
1
Sources
1.Stated in MinDat
View statement on Wikidata ↗
IMA status and/or rank: grandfathered mineral (G)(since 2007)
1
Sources
1.Stated in IMA/CNMNC List of Mineral Names (March 2009)
View statement on Wikidata ↗
Space group: space group Fd-3m
1
Sources
1.Stated in mineralienatlas.de
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Named after: Invincible language: Greek
1
Sources
1.Stated in MinDat
View statement on Wikidata ↗
MCN code: 7104.20.10
Density: 3.51 g/cm³ state of matter: solid
1
Sources
1.Stated in webmineral.com
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3.515 g/cm³ state of matter: solid
1
Sources
1.Stated in MinDat
View statement on Wikidata ↗
Crystal habit: octahedron
Refractive index: 2.384 temperature: 300 K · wavelength: 1.56 μm
4
Sources
1.hyperphysics.phy-astr.gsu.edu/hbase/Minerals/diamond.html
2.commons.erau.edu/cgi/viewcontent.cgi?article=1754&context=publication
3.inis.iaea.org/search/searchsinglerecord.aspx?recordsFor=SingleRecord&RN=12624513
4.researchgate.net/figure/The-temperature-dependence-of-refractive-index-nT-for-diamond-at-different-wavelengths_fig5_322140767
View statement on Wikidata ↗
Mineral fracture: conchoidal fracture
Members / parts: carbon
Shear modulus: 478 gigapascal
Has use: diamond industry
gemstone
Standard molar entropy: 2.377 joule per mole kelvin state of matter: solid
1
Sources
1.chem.libretexts.org/Bookshelves/General_Chemistry/Book%3A_ChemPRIME_(Moore_et_al.)/16%3A_Entropy_and_Spontaneous_Reactions/16.06%3A_Standard_Molar_EntropiesRetrieved 2019-01-25
View statement on Wikidata ↗
Different from: Diamond
Gyémánt criterion used: Hungarian
Tensile modulus of elasticity: 1,050 gigapascal
Unicode character: 💎
IMA Mineral Symbol: Dia
1
Sources
1.Stated in IMA–CNMNC approved mineral symbols
View statement on Wikidata ↗
Strunz 8th edition (series ID, updated): I/B.02b
1
Sources
1.Stated in Mineralogische Tabellen : Eine Klassifizierung der Mineralien auf kristallchemischer Grundlage, mit einer Einfuhrung in die Kristallchemie (1982)
View statement on Wikidata ↗
Source of material: Africa particularly: Southern Africa

On other databases

96 identifiers linking diamond across the web's reference databases

Data quality

139

statements

27%

externally sourced

Source last edited September 24, 2026. AIDB refreshes this page daily.

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AIDB. (2026). diamond (Q5283). Retrieved from https://aidb.si/e/diamond-Q5283