Gemstone profile and identification guide
Green Chalcedony
Green Chalcedony is a Green silicate (quartz) prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
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Overview
Green Chalcedony is a Green silicate (quartz) prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
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 Chalcedony
Scientific classification: Silicate (Quartz)
Hardness: 7 Mohs
Transparency: translucent
Lustre: silky
Crystal system: Hexagonal
Primary colour: Green
Secondary colour: Not specified
Colour family: Greens
Physical Properties
Hardness category: medium
Hardness value: 7 Mohs
Chemical composition: Silicon dioxide (SiO2)
Crystal system: Hexagonal
Common locations: Brazil, Madagascar, United States, Russia
Learn more: Gem-A gemstone education resources.
Colour Variations
Green Chalcedony is classified within the greens palette. Primary colour: green.
Optical effects: None specified in the current dataset.
Formation
Crystallizes from silica-rich fluids in hydrothermal veins, geodes, and pegmatites.
Origin
Brazil, Madagascar, United States, Russia
Uses
Best for: Energy-focused jewellery and everyday cabochons.
Ideal uses: Everyday wear and bright collections.
Care
Clean with warm water and mild soap; avoid extended exposure to direct sunlight for dyed varieties.
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Green Chalcedony FAQ
How can I identify Green Chalcedony?
Compare hardness (7 Mohs), crystal system (Hexagonal), colour profile, and lustre (silky) with your sample. Then cross-check related gemstones listed above.
What colour range does Green Chalcedony appear in?
Green Chalcedony is classified within the greens palette. Primary colour: green.
Where is Green Chalcedony commonly used?
Everyday wear and bright collections.. For maintenance, follow the care guidance in this profile.
Scientific References
Reference data from GIA and Mindat mineral records.