About Iolite

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Keep reading to discover more about Iolite

• Mineralogy and geology*
• Metaphysical, Spiritual and Healing** Properties***
• Common Associations

Mineralogy and Geology of Iolite

Iolite is the name given to gem-grade, violet-blue cordierite.

Mineral formula: (Mg,Fe)₂Al₃(AlSi₅O₁₈)

Crystal system: Orthorhombic

Crystal habit: Short prismatic; granular to compact; or massive.

Cleavage: Good

Fracture:  Uneven, conchoidal

Color: Shades of violet-blue, sometimes grey-ish

Luster: Vitreous

Diaphaneity: Transparent to translucent

Moh’s scale hardness: 7 – 7 ½

Streak: White

Specific gravity: 2.6 – 2.66

Named after:  the Greek word for “violet,” sometimes it is called “water sapphire”

Geological occurrence: Most gem material occurs as water-worn pebbles. Apart from alluvial, occurs in a variety of environments, including altered aluminous and igneous rocks.

Spiritual, Metaphysical and Healing Properties

Crystal energy experts say iolite is one of the major stones for use in third-eye and crown chakras for healing, during guided meditations, and during astral travel. Iolite also helps to balance yin-yang energies  and to release discord from one’s life. It supports enjoyment of the present moment and access to inner knowledge.

Common Associations

• Chakra – the third-eye and crown
• Numerology – vibrates to the number 7.
• Zodiac – Libra, Sagittarius and Taurus
• Birthstone – iolite is an alternative birthstone for September
• Wedding Anniversary – 21^st

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* Mineralogical information is from mindat.org

** Always consult with your medical professional for any physical or long-term healing issues.

*** Metaphysical properties come from: 

Love Is in the Earth (1995) Melody, Earth-Love Publishing House, 726 pp.

The Crystal Bible, A Definitive Guide to Crystals (2003) Judy Hall, Walking Stick Press, 399 pp.