mineral
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
AI-generated identification · may be incorrectHardness: 7 to 8 on Mohs scale; Color: Emerald green and yellow; Luster: Vitreous; Crystal System: Hexagonal (Beryl), Trigonal (Quartz), or Orthorhombic (Topaz).
- Hardness
- 7 to 8 on Mohs scale
- Color
- Emerald green and yellow
- Luster
- Vitreous
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Physical properties
Hardness: 7 to 8 on Mohs scale; Color: Emerald green and yellow; Luster: Vitreous; Crystal System: Hexagonal (Beryl), Trigonal (Quartz), or Orthorhombic (Topaz).
Formation & geological history
Formed in igneous pegmatites, hydrothermal veins, and metamorphic rocks such as mica schists. These minerals dates back to various geological eras depending on location.
Uses & applications
Primarily used in fine jewelry, pendants, and as investment-grade collector specimens.
Geological facts
Emeralds have been mined since 1500 BCE in Egypt. Citrine is often called the 'Merchant's Stone' for its association with wealth.
Field identification & locations
Identify by color and clarity under magnification. Emeralds often contain 'jardin' (internal inclusions). Commonly found in Brazil, Colombia, and Zambia.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous