Crystal Encyclopedia
Chalcedony
kal-SED-uh-nee
Microcrystalline Quartz
Hardness
6.5–7
System
Trigonal (cryptocrystalline)
Family
Quartz
Formula
SiO₂
Rarity
common
Planet
Moon
Chakra
Throat
Element
Water
Water
Water safe
Sun
Low
Toxicity
Non-toxic
Did You Know?
Used since prehistoric times for tools, seals, beads, and carved objects across many cultures.
Quick Learn
What is Chalcedony used for?
Chalcedony is commonly used for harmony, gentle communication, emotional balance.
Can Chalcedony go in water?
Chalcedony is rated: Water safe.Safe for brief cleansing rituals.
What chakra is Chalcedony?
Chalcedony resonates with the Throat chakra.
Scientific Data
Formula
SiO₂
Crystal System
Trigonal (cryptocrystalline)
Mineral Family
Quartz
Composition
Silicon
Origin Regions
Brazil, India, United States
Formation
Microcrystalline quartz formed in volcanic and sedimentary environments
Colors
White, blue, gray, pink, brown
Mohs Hardness
6.5–7
Metaphysical Properties
"I remain calm, balanced, and steady."
Geological Profile
Microcrystalline quartz composed of silica fibers
Care & Cleansing
Care Instructions
Safe to rinse briefly with water; avoid sudden temperature changes; polish with a soft cloth
Cleansing Methods
Water, moonlight, smoke
Historical Use
Used since prehistoric times for tools, seals, beads, and carved objects across many cultures.
Recommended Uses
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