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Quartz Var Amethyst

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TBM832103

Quartz Var Amethyst

Classic Locality

Description Tabs

Description
Locality: 
Arcu di Monte Nieddu, Nuxis, South Sardinia Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 8.5 × 6 cm
Weight: 
565.00gr
Description

Shaft of Amethyst  crystals up to 15 mm side.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple