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Corundum Var Sapphire

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PJM36138

Corundum Var Sapphire

Description Tabs

Description
Locality: 
Luc Yen Mine, Lục Yên District, Yên Bái Province, Vietnam
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2.5 × 2.2 cm
Largest Crystal: 
2.00cm
Description

A group of doubly terminated sapphire crystals from the alluvial deposits at Luc Yen, some minor granitic matrix attached. The largest of the dark blue crystals in this group measures a respectable 2.0cm

Mineral Data
What's on the rock

Corundum

Formula: 
Al2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
9.0
Streak: 
White

Sapphire

Variety Of: 

Corundum

Formula: 
Al2O3
Strunz: 
4.CB.05
Hardness: 
9.0
Formula: 
Al2O3
Hardness: 
0.0
Earthstones Australia

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