File:Béryl_var._émeraude_sur_gangue_(Muzo_Mine_Boyaca_-_Colombie)_2.jpg · Wikimedia Commons · See Wikimedia Commons

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emerald

thumb|Main emerald producing countries

AI overview

I don't have sufficient context to write an accurate overview based solely on the image provided, which appears to show only a map of emerald-producing countries without descriptive text about what emerald is or why it matters.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Mineral.name: Emerald
Mineral.category: Beryl variety
Mineral.boxbgcolor: 50C878
Mineral.boxtextcolor: black
Mineral.image: Béryl var. émeraude sur gangue (Muzo Mine Boyaca - Colombie) 2.jpg
Mineral.caption: Emerald crystal from Muzo, Colombia
Mineral.symmetry: (6/m 2/m 2/m) – dihexagonal dipyramidal
Mineral.unit cell: a = 9.21 Å, c = 9.19 Å; Z = 2
Mineral.formula: Be3Al2(SiO3)6
Mineral.molweight: 537.50
Mineral.color: Bluish green to green
Mineral.habit: Massive to well Crystalline
Mineral.system: Hexagonal (6/m 2/m 2/m) Space group: P6/mсc
Mineral.cleavage: Imperfect on the [0001]
Mineral.fracture: Conchoidal
Mineral.mohs: 7.5–8
Mineral.luster: Vitreous
Mineral.opticalprop: Uniaxial (−)

via Wikipedia infobox

Wikidata facts

Image: Béryl var. émeraude sur gangue (Muzo Mine Boyaca - Colombie) 2.jpg

Show 3 more facts

Commons category: Emeralds
MCN code: 7103.91.00
Mohs' hardness: 7.6

Sources (3)

via Wikidata · CC0

~17 min read

Article

16 sections

Contents

Etymology
Properties determining value
Color
Clarity
Treatments
Emerald mines
Origin determinations
Synthetic emerald
Historical and cultural references
Notable emeralds
Gallery
See also
Notes
References
Further reading
External links

thumb|Main emerald producing countries

Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds have many inclusions, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate. It occurs mainly in association with quartz, muscovite, albite, schorl, microcline, fluorite, smoky quartz and elbaite.