Database of luminescent Minerals


Chemical Formula:See BERYL

Familly: Silicates

Status: NR

Crystal System: Hexagonal

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Red

Daylight Picture

Emeraude, Muzo, Colombia;
Photo and Copyright: Richard Loyens

Long Waves Picture (365nm)

Emeraude, Muzo, Colombia;
fluo red, excitation: laser 405nm
Photo and Copyright: Richard Loyens


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

No phosphorescence seen by naked eye whatever the type of UV


The gem variety of BERYL of green color.

Main Activator(s) and spectrum:

Most Common Activator: Cr3+

Other activators:            Fe3+ , Mn4+ , Mn2+ , V2+ ,

Peaks in the spectrum (nm):

Cr3+ : Lines at 682, 683, 684nm, 

Cr3+ replacing Al3+ : broad band peaking at 730nm  

Cr3+ : (666), 685, (696), 

Cr3+ I: 725nm (Band)

Cr3+ II: 715nm (Band)

Fe3+ : broad band at 735nm

Cr3+ , V2+, Mn4+ : broad band at 720 (Lifetime = 100 microsecondes)

VO4 : 423 (Lifetime = 1 microseconde)

Col. G. Barmarin; Spectre: G. Barmarin


  To the spectrum gallery (3 spectra in the gallery)

Comments on activators and spectra:

Steady-state emission of beryl was previously studied.

The broad band at 720 nm is connected with Fe3+, while the relatively narrow bands at 480 and 570 nm are ascribed to Mn2+ in tetrahedral and octahedral coordination, correspondingly.

Cr3+ emission was connected with narrow R-lines at 680 and 682 nm (Tarashchan 1978; Kuznetsov and Tarashchan 1988). (Cr3+ impurity ions in highly distorted octahedron sites)

The Cr3+ luminescence properties in natural beryl minerals have been studied as a function of the Cr content as well as impurities such as Fe and V. It appears that the Cr3+ crystal field is linked to the Cr amount and decreases when Cr increases. A competition between Cr and V was noticed for very low Cr concentration (Ollier et al. 2015). (Gaft)


Best Locality for luminescence(*):

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

Bibliographical Reference for luminescence:

Mineralogical Reference on internet:

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