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Demantoid

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Watches:
CAM184777

Demantoid

Ex University of Amsterdam
With Antique Label

Description Tabs

Description
Locality: 
Valtellina, Sondrio Province, Lombardy, Italy
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 3.8 × 2 cm
Description

This items includes three historical samples from Valtellina with lots of lustrous bright green demantoid crystals up to 4 mm on matrix.
The largest specimen is 7 x 3.8 cm.
Collected in the late 1940's by members of the Geological Institute of the University of Amsterdam, Netherlands.

Mineral Data
What's on the rock

Demantoid

Variety Of: 

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Hardness: 
6.5 - 7.0
Cartils Minerals

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