emerald
Sign in to savethumb|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
Article
16 sectionsContents
- 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.