Database of luminescent Minerals


Chemical Formula: C

Familly: Native elements

Status: IMA-GP

Crystal System: Isometric

Mineral for Display: Yes


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Blue StrongOften
Other colors LW:                                                  
Bluish White , Yellowish White , Pinkish White , Pale Yellow , Yellow , Dark Orange /Tawn , Red , Green , Greenish white , Yellowish ,

Daylight Picture

Diamant, Congo;
Photo et col. G. Barmarin

Long Waves Picture (365nm)

Diamant UVLW (superbright 2000), Congo;
Photo et col. G. Barmarin


Galerie de photos:


     To the gallery (14 images in the gallery)

Phosphorescence (in the common meaning of the term) seen by naked eye:

UV Type Color Intensity Observation Frequency
Long Wave (365nm): Bluish White StrongOften
Short Waves (254 nm): Red StrongVery rarely

Thermoluminescence: Yes


Probably the earliest phosphorescent mineral known after exposition to the sunlight.

In 1663, Robert Boyle first noted the triboluminescence of diamond when broken.

Mrs Kunz wife of the well known mineralogist possessed a prodigious diamond  that was phosphorescent in the dark for some minutes after just being exposed to a small pocket electric lamp.

Kunz in 1895 attributed the fluorescence and phosphorescence that is shown by some diamonds to the presence of a hypothetical hydrocarbon, for which  e gave the name ' tiffanyite '. 

About One diamond upon four is luminescent.

Main Activator(s) and spectrum:

Most Common Activator: N (Nitrogen)

Other activators:            B (Boron) ,

Peaks in the spectrum (nm):

N3 center: 442, 507 nm
H3 center: 520nm 
A-band center: 452nm
N3 center: 415, 428, 439, 452, 731nm

Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.


  To the spectrum gallery (12 spectra in the gallery)

Comments on activators and spectra:

Luminescence of diamond is related to various defects in its structure, almost always related to N (Nitrogen) atoms (The atomic radius of C and N are nearly equal to 0.77 angströms).

Remarkable luminescence/phosphorescence of some blue diamonds such as "Hope" and "Blue Moon";

Best Locality for luminescence(*):

(*)Data are not exhaustive and are limited to the most important localities for fluorescence

Bibliographical Reference for luminescence:

Luminescence Reference on internet:

Mineralogical Reference on internet:

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Note: While all due attention has been paid to the implementation of the database, it may contain errors and/or accidental omissions. By nature, the database will always be incomplete because science always evolves according to new analysis.
A request providing no result means only that no such reference exists in the database, but it does not mean that what you are looking for does not exist, just not to our knowledge. If you think you have found an error or omission, please let us know via the contact page being sure to cite the source of information.


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