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Rock Crystal

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MGR683592

Rock Crystal

Description Tabs

Description
Locality: 
Grimsel, Hasli Valley, Bern, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 3.2 cm
Description

This group of sharp terminated, lustrous rock crystals shows a thin limonite-layer. This yellow layer shows a iridiscent luster which looks like oil on water. This is really a very rare and wonderful effect, better visible in person - but the first photo of the gallery should give you an idea. 

Mineral Data
What's on the rock

Rock Crystal

Variety Of: 

Quartz

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