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Emerald Emerald

The Emerald is a beryl and the chemical formula is Al2Be3[Si6O18]. It is a complex linkage. The ligand Si6O18 is a cyclosilicate. This means that the atomes in the molecule form a ring. The hardness is about 7.5 to 8 and the crystal system is hexagonal. The Emerald is green. The green color is caused by admixtures of chromium oxide. He belongs to the most expensive stones on Earth. In antiquity many jewels were made of this stone. Many Emeralds are found in Columbia, Brazil and Russia. Until today we find this stone in jewels. In antiquity people thought that he has got positive effects.

Data about the Emerald
Chemical formula Al2Be3[Si6O18]
Mineral class silicates
Crystal system hexagonal
Hardness 7.5 to 8
Density 2.6 g/cm3 to 2.8 g/cm3
Color green
Line color white
Gloss glass gloss
Break shell
Fissileness none

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Last Update: 03.11.2004