Database of luminescent Minerals


emerald


Chemical Formula:See BERYL

Familly: Silicates

Status: NR

Crystal System: Hexagonal

Mineral for Display: No


Luminescence:


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

Comments:


Gem variety of BERYL of green color; Narrow line at 684 nm and broad band peaking at 715 nm (Cr3+ impurity ions in highly distorted octahedron sites)


Main Activator(s) and spectrum:


Most Common Activator: Cr3+

Peaks in the spectrum (nm):

Cr3+ : Lines at 683nm, 

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

Cr3+ : (666), 685, (696), 717, 728, 738nm


Col. G. Barmarin; Spectre: G. Barmarin

         ...

  To the spectrum gallery (3 spectra in the gallery)


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:


  http://www.mindat.org/show.php?name=Emerald

  http://webmineral.com/data/Emerald.shtml

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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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