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Beryl Var Aquamarine

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RHT820414

Beryl Var Aquamarine

ex collection Thomas Körber
Classic Locality

Description Tabs

Description
Locality: 
Gonçalo, Guarda, Guarda District, Portugal
Class: 
Single Crystal
Size Range: 
Museum (18cm plus)
Size: 
29 × 5.3 × 4.4 cm
Weight: 
941.00gr
Description

What a whopper of a beryl crystal. The biggest beryl I've ever seen from Portugal. Very pale blue green in natural light, much more intense pale blueish green with backlight.

No termination, but still an impressive specimen for its locality.

The locality is given as Goncalo, but from what I can compare online it's probably from Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu.

Mineral Data
What's on the rock

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Crystal System: 
Hexagonal
Hardness: 
7.5 - 8.0
Streak: 
White

Aquamarine

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3Al2Si6O18
Hardness: 
0.0
Colour: 
Blue
Streak: 
White