Traditionally associated with clear thinking, restraint and calm; the classic stone of sobriety.
Composition
Silicon dioxide (SiO₂) — quartz coloured by iron and natural irradiation
Hardness · Chakra
7 · Third Eye, Crown
Amethyst fades in sunlight. Heat it and it turns yellow — most commercial citrine is heat-treated amethyst.
Traditionally the stone most often reached for when the goal is calming an overactive mind.
Composition
Lithium-rich mica (K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂)
Hardness · Chakra
2.5–3 · Third Eye, Crown
Genuinely contains lithium — the same element used in mood-stabilising medication. That is a mineralogical fact, not a claim that holding the stone has any comparable effect.
Traditionally associated with settling anxiety and staying present.
Composition
Silicon dioxide (SiO₂) darkened by natural irradiation of aluminium impurities
Hardness · Chakra
7 · Root
Its colour comes from natural radiation acting on aluminium traces over geological time — heat it and the smoke disappears.
Traditionally associated with rational thought and calm discussion.
Composition
Sodium aluminium silicate chloride (Na₈Al₆Si₆O₂₄Cl₂)
Hardness · Chakra
5.5–6 · Third Eye, Throat
Often mistaken for lapis lazuli, but sodalite lacks the gold pyrite flecks and runs a flatter, more uniform blue.
Traditionally used for clearing a space and resetting other stones.
Composition
Hydrated calcium sulphate (CaSO₄·2H₂O) — crystalline gypsum
Hardness · Chakra
2 · Crown
Water-soluble — never rinse it. The Cave of Crystals in Naica holds selenite beams over eleven metres long, the largest natural crystals ever found.