Natural specimen, illustrative.
Chalcedony · Mohs 6.5–7
Agate
Banded microcrystalline quartz with a wide variety of patterns. Bright saturated colours may indicate dye treatment.
- Composition
- SiO2
- Hardness
- 6.5–7 on the Mohs scale · scratch resistance, not toughness
- Birthstone
- No modern month assignment
- Care
- Clean gently with a soft cloth and mild soapy water; rinse briefly and dry. Avoid heat, chemicals, ultrasonic cleaning and hard impacts. Ask about treatments before cleaning.
- Paired with
- Gemini · Rooster years
- Symbolic
- Grounding, Expression · Root, Throat chakras. Design vocabulary, not a physical effect.
Pairs well with
Stones that share its meaning.
Garnet
Garnet group · Mohs 6.5–7.5
Grounding · Confidence
Aquamarine
Beryl · Mohs 7.5–8
Calm · Expression
Bloodstone
Chalcedony · Mohs 6.5–7
Grounding · Confidence
Ruby
Corundum · Mohs 9
Confidence · ConnectionGem properties describe materials. Chakra and intention pairings are symbolic traditions and Mulu design choices, not measured energy or medical effects. Stones are not proven to treat disease or improve sleep.