Chalcedony · Mohs 6.5–7
Carnelian: Identification, Meaning & Care
Carnelian is orange to red chalcedony, a microcrystalline form of quartz commonly colored by iron oxides.
Carnelian properties
- Formula
- SiO₂
- Mineral group
- Chalcedony
- Mohs hardness
- 6.5–7
- Color
- Orange to reddish brown
- Transparency
- Translucent to opaque
- Luster
- Waxy to vitreous
- Cleavage / fracture
- None; conchoidal fracture
How to identify Carnelian
- Shows a warm translucent glow at thin edges.
- Usually has a waxier luster than crystalline quartz.
- Very uniform vivid color may warrant treatment disclosure.
Carnelian care
Water
Brief rinsing is generally tolerated; avoid harsh chemicals.
Light & heat
Some dyed material can change with prolonged light exposure.
Storage
Store separately from harder materials and cushion sharp edges, points, or cleavage-prone faces.
Traditional meaning
Historically used in seals and ornaments and often linked with courage or vitality.
Traditional symbolism is presented as cultural history or personal practice, not as a scientific or medical claim.
Sources & further checking
- Mindat mineral database
- GIA Gem Encyclopedia
- RRUFF mineral database
- International Mineralogical Association
See our full methodology.