Aquamarine Crystal on Schorl Crystals –  NERA 028

Aquamarine crystal with gemmy termination on schorl crystal matrix



Measurements:  41 x 40 x 32 mm 

Description:  A light blue aquamarine crystal (34 x 11 x 10 mm) with an interesting 'stepped', gemmy termination, sits on schorl crystals (variety foitite) and some feldspar which have a partial coating of very minute, greenish / yellowish crystals of a (to us, unknown) mineral. 

The aquamarine crystal's termination has a few very small nicks, while the matrix has very little damage.

The specimen displays well on a flat surface.

Weight of Specimen:  36.0 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, Africa.

Specimen Code:  NERA 028

US $ 135




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