Database of luminescent Minerals


Chemical Formula:See CORUNDUM

Familly: Oxides and hydroxides

Status: NR

Crystal System: Rhomboedric

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Red Weak
Other colors LW:     
Violet red ,

Daylight Picture

Long Waves Picture (365nm)


Galerie de photos:

The directory does not exist...

     To the gallery ( images in the gallery)

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

No Data

Main Activator(s) and spectrum:

Most Common Activator: Cr3+

Other activators:            Fe3+ ,

Peaks in the spectrum (nm):

Cr3+ replacing Al : Lines at 692.8, 694.3nm  (R1 and R2 lines)

Cr3+ :  658.2 , 668.2 ,  674.1 , 680 (small lines)  

N-lines (Cr3+ pairs) : 705.8 , 712nm (small lines)

Fe3+ : broad band peaking at 896nm (Sapphire)

No spectrum for the moment

Comments on activators and spectra:

Activator: Cr3+ replacing Al giving strong well known 2E->4A2 lines with long decay time


Besides that, much weaker narrow lines present, which are connected with Cr-pairs and more complicated complexes (so called N-lines) (Tarashchan 1978).

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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