diamond
Let an agent explain diamond as a material and gemstone, relay structure, formation, grading and uses from mineralogy and gemmology sources, describe synthetic and industrial diamond, and distinguish diamond from graphite, from simulants such as cubic zirconia and from the card suit and geometric senses.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain diamond as a material and gemstone, relay structure, formation, grading and uses from mineralogy and gemmology sources, describe synthetic and industrial diamond, and distinguish diamond from graphite, from simulants such as cubic zirconia and from the card suit and geometric senses.
A crystalline allotrope of carbon in which each atom is bonded to four others in a rigid lattice, the hardest known natural material, valued as a gemstone in rough and cut forms including rose cuts and coloured diamonds such as pink diamonds, and used industrially for cutting, in electronics as boron-doped semiconducting diamond and in optics; diamonds form deep in the mantle, are mined and increasingly grown synthetically, and historical stones such as those recorded among the jewels of James III of Scotland illustrate their role in royal treasuries.
What it is for: Gemstones, cutting tools and advanced materials.
It can be explain structure and formation; relay grading and uses; describe synthetic diamond; distinguish related materials.
Distinguishing features
Tetrahedral carbon lattice
Extreme hardness
Gem and industrial use
Natural and synthetic
What it looks like
A transparent, brilliant crystal, colourless or coloured.
Physical character
Mohs hardness: 10 scale
density: 3.52 g per cubic cm
refractive index: 2.42 value
largest rough: Cullinan, 3106 carats - 1905
How it is recognised
Hardest carbon crystal
Rough diamond, rose diamond, colour diamond, pink diamond, boron-doped diamond
Graphite is soft carbon; cubic zirconia and moissanite are simulants; the card suit is a symbol
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is contrasted with - the soft carbon allotrope
is graded by - cut, colour, clarity, carat
In practice
Families and kinds
rough diamonds
cut diamonds including rose cuts
coloured diamonds such as pink, blue and yellow
industrial diamond
synthetic diamond by HPHT and CVD
doped diamonds such as boron-doped semiconducting diamond
Identifiers
mineral diamond IMA approved
CAS 7782-40-3
Standards and regulation
Kimberley Process for conflict diamonds
Gemmological grading standards such as GIA
Disclosure rules for synthetic diamonds
Failure modes and hazards
Undisclosed synthetics and simulants
Conflict diamond trade, with positions attributed
Registry aliases mixing cuts, colours and a historical inventory
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.diamond
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What diamond is.
Science.
Definition
Definition and structure.
Definition
Definition.
- What is diamond, and how does its structure differ from graphite and from simulants? definition
- Is the question about the material, gemstones, industry or another sense of diamond? boundary
Kinds
Kinds.
Kinds
Kinds.
- What are rough, rose-cut, coloured and pink diamonds, and boron-doped diamond? definition
- Which entry fits the specific kind? action
Science Formation and properties.
Science.
Formation
Formation and mining.
Formation
Formation.
- How do diamonds form in the mantle, reach the surface in kimberlites and get mined? provenance
- Which references are standard? provenance
Synthetic
Synthetic diamond.
Synthetic
Synthetic.
- How are diamonds grown by HPHT and CVD, and how are they detected? provenance
- Which sources are cited? provenance
Use Uses.
Application.
Gems
Gemstones.
Gems
Gems.
- How are diamonds cut and graded by the four Cs, and how is the market structured? provenance
- Which entry fits diamond cutting? action
Industry
Industry and electronics.
Industry
Industry.
- How is diamond used in cutting tools, optics and boron-doped semiconductors? provenance
- Which entry fits industrial diamond? action
Context Ethics and history.
Context.
Ethics
Ethics.
Ethics
Ethics.
- What are the debates about conflict diamonds, the Kimberley Process and mining, with positions attributed? provenance
- Is the presentation neutral? boundary
History
History.
History
History.
- How have diamonds figured in history, from Indian mines to royal jewels such as those of James III of Scotland? provenance
- Which entry fits the history of diamonds? action
What the second pass must settle
- Should synthetic diamond and coloured diamond be separate primary entries?
- How should gemmology sources be linked?
- The registry entry has merged aliases naming cuts, colours, doped forms and a royal inventory; should they be split off?