Emerald

Image

Crystals of emerald (variety of beryl)

© Photo by Аружан Жамбулатова (via Wikimedia Commons), CC-BY-SA 3.0

Properties

Formula Be3Al2Si6O18
Classification Beryl
Luminescence emitter Cr
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Hexagonal, Point group 6/mmm, Space group P6/mcc (#192)
Tags Variety, Aluminosilicate

Composition

Element Atoms
Be 3
Al 2
Si 6
O 18
V ?
Cr ?

Reference

Reference Lines Spectra Images
Burns et al. 1965 2 0 0