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EducationDiamagnetic minerals

17th Dec 2025 14:56 UTCAppel Bartelsen OP

Which minerals are diamagnetic?

17th Dec 2025 15:00 UTCRichard Gibson 🌟

Quartz, Feldspar, Halite (salt), Calcite, Pyrite, Diamond, Sulfur, Graphite, Bismuth, Copper, Gold, Silver, others.

 

17th Dec 2025 17:58 UTCDavid Von Bargen Manager

Appel Bartelsen OP  ✉️

diamagnetic
 NameIDmagnetismBaryte
549DiamagneticBorax
722DiamagneticChromferide
1035DiamagneticEpsomite
1393DiamagneticFranklinite
1598DiamagneticGoslarite
1731DiamagneticIce
2001DiamagneticLudlamite
2452DiamagneticNative Cadmium
842DiamagneticNitratine
2916DiamagneticThorianite
3944DiamagneticUsovite
4121Diamagnetic
 

17th Dec 2025 18:03 UTCLalith Aditya Senthil Kumar

Ice.

17th Dec 2025 19:45 UTCWayne Corwin 🌟

Appel
One step above that... (from Google)   Pyrolytic graphite (PG)  

Key aspects of pyrolytic graphite's diamagnetism:
  • Strong Diamagnetism: 
    PG exhibits the strongest diamagnetism of any room-temperature material, allowing it to float stably over a permanent magnet array.

   Pyrolytic graphite (PG) is a man-made material known for its exceptionally strong diamagnetism, the property of repelling magnetic fields, allowing it to levitate above magnets. This effect is due to its unique crystal structure, where carbon layers are aligned, creating a strong opposing magnetic field when exposed to an external one, making it a popular material for demonstrating stable magnetic levitation. Its diamagnetic susceptibility is highly anisotropic, meaning it's much stronger perpendicular to the crystal planes than parallel to them.  

  • Anisotropy: 
    The material's crystal structure is highly directional. Its diamagnetic response is much stronger (up to 70 times greater) perpendicular to the carbon layers than parallel to them.
       Levitation: 
  • When a thin wafer of PG is placed over an arrangement of strong magnets (like four neodymium magnets), the diamagnetic repulsion balances the force of gravity, creating stable levitation.
       Mechanism: 
  • In an external magnetic field, PG generates an opposing magnetic field, pushing against the magnet and creating a repelling force.
  • Applications: 
    Its unique properties are used in magnetic field detection, precise positioning, and as a component in micromachinery and sensors.
       Production: 
  • It's created by depositing carbon from a hydrocarbon gas at high temperatures, resulting in a material with highly ordered, layered crystal sheets.
   

18th Dec 2025 05:12 UTCYash Redkar

Wayne,

Appel, not apple :-)

Finally a chance to correct your typo instead of vice-versa!! LOL

18th Dec 2025 17:21 UTCWayne Corwin 🌟

Whoops,,,, fixed,,, TY. 

7th Feb 2026 17:39 UTCcascaillou

Some useful link:


The succeptibility index page seems currently broken, but here's the corresponding table:

7th Feb 2026 21:57 UTCRalph S Bottrill 🌟 Manager

It seems diamagnetism is a property of most materials, but only notable in very few: https://www.mindat.org/glossary/diamagnetic

It seems bismuth is the most diamagnetic material known, though pyrolitic graphite is stronger in one direction. 
 
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