Aquamarine Crystal Group –  NERA 029 

Aquamarine crystal group on small matrix

Measurements:  25 x 20 x 13 mm 

Description:  A group of pale blueish-green aquamarine crystals on a small feldspar matrix.  

Some of the crystals have minute bits of schorl on some faces. 

The specimen has only a few small nicks. 

Weight of Specimen:  2.6 g

Chemical Composition:  Be3Al2Si6O18  (aquamarine
                                       NaFe2+3Al6Si6O18(BO3)3(OH)4
 (schorl)    
                                       KAlSi3O8 
 (feldspar)  

Hardness on Mohs Scale:  (aquamarine) 7.5 - 8.0
                                          (schorl)  7.5                                     
                                          (feldspar)
 6 - 6.5

Location:  Erongo, Namibia.

Specimen Code:  NERA 029

US $ 18




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