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Beryl Var Aquamarine

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PDM599174

Beryl Var Aquamarine

Description Tabs

Description
Locality: 
Medina, Minas Gerais, Brazil
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 0.5 × 0.5 cm
Description

A great crystal of beryl (variety aquamarine), doubly terminated and slightly etched, with some dissolution channels filled by a yellow matter (oxides? clay?). The base termination is flat, with a contact to other crystals. The top is in pristine condition, composed of an outstanding complex termination, very rich in faces, dominated by {101} and {112} dipyramides. A good, old-time aquamarine from the Medina Pegmatites of the Pedra Azul area.

Acquired in 1980, Ex. Francois Verhallen (BE) specimen.

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

Seller Information

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