Gemstone profile and identification guide
Green Quartz
Green quartz is a broad trade category that may include naturally green included quartz or treated quartz.
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Overview
Green quartz is a broad trade category that may include naturally green included quartz or treated quartz.
Did you know? Some market products sold as green quartz are treated amethyst or other quartz variants.
Use this profile as a collector reference and educational guide for quick on-page comparison, then validate with the interactive identification system.
Identification
Name: Green Quartz
Scientific classification: Silicate (Quartz Color Variety/Trade Category)
Hardness: 7 Mohs
Transparency: transparent
Lustre: vitreous
Crystal system: Trigonal
Primary colour: Green
Secondary colour: Yellow Green
Colour family: Greens
Confirm quartz constants and assess whether color is inclusion-derived or treatment-enhanced.
Verification Status
Status: verified-core-fields
Reference priority: GIA, Gem-A, Mindat, International Gem Society
Core identity, locality, and physical-property fields reviewed against standard gemological references.
Trade-name entries include treatment/composition disclosures where applicable.
Physical Properties
Hardness category: hard
Hardness value: 7 Mohs
Chemical composition: Silicon dioxide (SiO2)
Crystal system: Trigonal
Common locations: Brazil, Madagascar, India, United States
Learn more: Gem-A gemstone education resources.
Colour Variations
Green quartz category including naturally included varieties and treated green quartz products.
Optical effects: None specified in the current dataset.
Detailed Gemology
Mineral species: Quartz trade color category
Mineral group: Quartz group
Chemical formula: Silicon dioxide (SiO2)
Mohs hardness: 7
Crystal system: Trigonal
Lustre: vitreous
Transparency: transparent
Streak: White
Cleavage: None
Fracture: Conchoidal
Specific gravity: 2.65
Refractive index: 1.544-1.553
Optical phenomena: None typically diagnostic
Colour range: Pale green to medium green
Common inclusions: Chlorite, actinolite, fractures, fluid inclusions
Geological environment: Hydrothermal and pegmatitic quartz systems
Principal mining regions: Brazil, Madagascar, India, United States
Important commercial sources: Green quartz in trade includes both natural included quartz and treated material from major quartz-producing countries
Historical significance: Modern trade category for green quartz jewelry stones.
Common treatments: Heat/irradiation and coating can occur depending on product type.
Synthetic or imitation forms: Dyed quartz and green glass are common imitations.
Common look-alikes: Prasiolite, green amethyst products, dyed quartz
Jewellery uses: Green Quartz is used chiefly for General jewellery use with treatment disclosure where relevant.. In the trade it is commonly fashioned as faceted stones, calibrated cuts, and higher-clarity collector pieces, with Mohs hardness 7 guiding suitable jewellery applications.
Care recommendations: Quartz is durable; verify treatment and avoid prolonged high heat for colour-stability-sensitive products.
Cross-check profile data with GIA Gem Encyclopedia and Mindat entry for Green Quartz.
Formation
Natural green coloration may relate to inclusions; some trade material is heat/irradiation treated from quartz precursors.
Origin
Green quartz in trade includes both natural included quartz and treated material from major quartz-producing countries
Uses
Best for: Green Quartz is used chiefly for General jewellery use with treatment disclosure where relevant.. In the trade it is commonly fashioned as faceted stones, calibrated cuts, and higher-clarity collector pieces, with Mohs hardness 7 guiding suitable jewellery applications.
Ideal uses: General jewelry use with treatment disclosure where relevant.
Care
Quartz is durable; verify treatment and avoid prolonged high heat for colour-stability-sensitive products.
Need another candidate? Use advanced gemstone search or return to the identification guide.
Related gemstones by colour
Related gemstones by hardness
Commonly confused gemstones
Green Quartz FAQ
How can I identify Green Quartz?
Compare hardness (7 Mohs), crystal system (Trigonal), colour profile, and lustre (vitreous) with your sample. Then cross-check related gemstones listed above.
What colour range does Green Quartz appear in?
Green quartz category including naturally included varieties and treated green quartz products.
Where is Green Quartz commonly used?
General jewelry use with treatment disclosure where relevant.. For maintenance, follow the care guidance in this profile.
Scientific References
GIA: general gemstone identity (reviewed) - Batch 05 factual verification pass.
Gem-A: gemological terminology and testing references (reviewed) - Batch 05 factual verification pass.
Mindat: mineral species and principal localities (reviewed) - Batch 05 factual verification pass.
International Gem Society: gem trade context and treatment overview (reviewed) - Batch 05 factual verification pass.