Choose a letter, pick a stone from the list, and read about it: what it is made of, how hard it is, what it looks like, what it has traditionally been said to do, and how to look after it.

450 minerals

Apophyllite

The Glassy Doorway to Stillness

About the stone

Apophyllite crystal — Photo: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons

Apophyllite is a group of water-bearing silicate minerals prized for glassy, often colorless, white, or green crystals that form in cavities within volcanic rocks. French mineralogist René Just Haüy described and named it in 1806, drawing on Greek words meaning “to flake off” because it sheds layers when heated and loses its structural water; once treated as a single mineral, it was subdivided into distinct species beginning in 1978. Famous sources include Maharashtra, India—especially Pune and Jalgaon—as well as Germany, Brazil, Canada, and Norway. In modern crystal lore, apophyllite symbolizes spiritual clarity, meditation, and connection with guardian angels.

Mineral data

Chemical composition: Apophyllite is a hydrated potassium calcium fluoride-silicate mineral, approximately KCa₄Si₈O₂₀(F,OH)₈H₂O, structurally related to the zeolites.
Hardness: 4.5 to 5 on the Mohs scale.
Color: Colorless, white or grayish and glassy, with green specimens found in India and Canada.
Specific gravity: 2.30-2.50
Refractive index: 1.535-1.537

Metaphysical data

Apophyllite, recognized for its clear, glassy crystals and high water content, has been utilized in metaphysical practices to bring deep stillness, spiritual connection and mental clarity.

Peaceful and Still Energy

Apophyllite is believed to bring a deep, peaceful stillness, making it a welcome companion for relaxation and reiki practices.
It is thought to create openness, helping one set down tension and rest in quiet awareness.

Emotional Healing

Apophyllite is often used to release suppressed emotions, mental blockages and negative thought patterns that have lingered unspoken.
It is believed to encourage honesty, helping one connect to spirit and act in truth.

Harmonizing Energy Centers

Apophyllite is associated with the third eye and crown chakras, and is thought to open inner sight and spiritual connection.
Placed on the brow or above the head, it is believed to refresh these centers like a drop of clear spring water.

Zodiac Associations

Apophyllite is associated with the zodiac signs of Gemini and Libra, signs that value communication, balance and fairness.
It vibrates to the number 4, linked with foundation and order, and is thought to stabilize intuitive experiences.

Spiritual Growth

Apophyllite is useful for meditation, dream recall, clairvoyance, out of body travel, past life work and the development of psychic abilities.
It is often used to deepen spiritual practice, helping one connect to spirit and speak and act from truth.

Physical Healing

Apophyllite is not a substitute for professional medical advice, but it is traditionally believed to aid the body's regenerative abilities.
It is also said to support those with asthma and respiratory difficulties, always alongside proper medical care.

Care and handling

Apophyllite is brittle with perfect cleavage, and its points chip easily, so handle gently and avoid knocks. Keep it away from strong heat and direct sun, which can dull or craze it, and avoid soaking or ultrasonic cleaning. Dust with a soft brush or wipe with a barely damp cloth, and do not use acids.

Individual experiences with Apophyllite vary, and its effects are personal rather than guaranteed. Sit with it in stillness, and let it complement, never replace, medical advice.