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  2. Allotropes of carbon - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_carbon

    Unlike diamond, graphite is an electrical conductor. Thus, it can be used in, for instance, electrical arc lamp electrodes. ... Graphite is the most stable allotrope ...

  3. Lonsdaleite - Wikipedia

    en.wikipedia.org/wiki/Lonsdaleite

    Lonsdaleite (named in honour of Kathleen Lonsdale), also called hexagonal diamond in reference to the crystal structure, is an allotrope of carbon with a hexagonal lattice, as opposed to the cubical lattice of conventional diamond.

  4. Allotropy - Wikipedia

    en.wikipedia.org/wiki/Allotropy

    Diamond and graphite are two allotropes of carbon: pure forms of the same element that differ in crystalline structure.. Allotropy or allotropism (from Ancient Greek ἄλλος (allos) ' other ' and τρόπος (tropos) ' manner, form ') is the property of some chemical elements to exist in two or more different forms, in the same physical state, known as allotropes of the elements.

  5. Graphite - Wikipedia

    en.wikipedia.org/wiki/Graphite

    The expanded graphite can be used to make graphite foil or used directly as a "hot top" compound to insulate molten metal in a ladle or red-hot steel ingots and decrease heat loss, or as firestops fitted around a fire door or in sheet metal collars surrounding plastic pipe (during a fire, the graphite expands and chars to resist fire ...

  6. Carbon - Wikipedia

    en.wikipedia.org/wiki/Carbon

    Some allotropes of carbon: a) diamond; b) graphite; c) lonsdaleite; d–f) fullerenes (C 60, C 540, C 70); g) amorphous carbon; h) carbon nanotube. At very high pressures, carbon forms the more compact allotrope, diamond, having nearly twice the density of graphite.

  7. Forget bling, De Beers has found a surprising use for lab ...

    www.aol.com/finance/forget-bling-beers-found...

    Forget bling, De Beers has found a surprising use for lab-grown diamonds outside of luxury jewelry, and business is booming. Prarthana Prakash. Updated December 9, 2024 at 12:24 PM.

  8. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    Diamond and graphite materials and structure. Diamond is an allotrope of carbon where the atoms are arranged in a modified version of face-centered cubic (fcc) structure known as "diamond cubic". It is known for its hardness (see table above) and incompressibility and is targeted for some potential optical and electrical applications.

  9. Material properties of diamond - Wikipedia

    en.wikipedia.org/wiki/Material_properties_of_diamond

    Diamond is the allotrope of carbon in which the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. It is a crystal that is transparent to opaque and which is generally isotropic (no or very weak birefringence). Diamond is the hardest naturally occurring material known.