Aquamarine, Schorl and Feldspar Specimen - NERA 006

Measurements:  42 x 26 x 25 mm

Description:  A good combination of aquamarine, schorl and feldspar crystals. It looks like the largest aquamarine crystal has actually formed around a feldspar crystal to some extent, and has schorl crystals sitting in and across its termination. The terminations of the aquamarine crystals have fairly good clarity.

The specimen has no notable damage.

Weight of Specimen:  20.3 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 006