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Chiyokoite
David Hospital·CC BY-SA 4.0·Wikimedia

Chiyokoite

Ca3Si(CO3)[B(OH)4]O (OH)5·12H2O
Hexagonal heart IMA approved

Chiyokoite is a rare hydrated calcium silicate carbonate hydroxide borate mineral with the chemical formula Ca3Si(CO3)[B(OH)4]O (OH)5·12H2O. It crystallizes in the hexagonal crystal system and is classified as a nesosilicate. This mineral is notable for its complex chemical composition, which includes both carbonate and borate groups. It typically exhibits a vitreous luster and is usually colorless or white in appearance. Chiyokoite is relatively soft, with a low hardness and low density, making it fragile and delicate. Its unique chemical structure and crystal system distinguish it within the broader silicate mineral group.

Overview

Chiyokoite is a rare hydrated calcium silicate carbonate hydroxide borate mineral with the chemical formula Ca3Si(CO3)[B(OH)4]O (OH)5·12H2O. It crystallizes in the hexagonal crystal system and is classified as a nesosilicate. This mineral is notable for its complex chemical composition, which includes both carbonate and borate groups. It typically exhibits a vitreous luster and is usually colorless or white in appearance. Chiyokoite is relatively soft, with a low hardness and low density, making it fragile and delicate. Its unique chemical structure and crystal system distinguish it within the broader silicate mineral group.

Etymology

Chiyokoite is named after Chiyoko Henmi, in recognition of her contributions to mineralogy. The mineral was approved by the International Mineralogical Association (IMA).

How to recognize it

Chiyokoite can be identified by its hexagonal crystal system and low hardness, which is typically less than 4 on the Mohs scale. It is colorless or white and has a vitreous luster. A streak test will yield a white streak. Due to its rarity and specific chemical composition, it is unlikely to be confused with more common minerals, though its low hardness and color may resemble other hydrous silicates.

Trivia

Chiyokoite is notable for its complex chemical formula, which includes both carbonate and borate groups in a single structure. It crystallizes in the hexagonal system, which is relatively uncommon for minerals of its type. The mineral is named after Chiyoko Henmi, a significant figure in the field of mineralogy, highlighting its importance in the scientific community.

Indicative prices

Chiyokoite is an extremely rare mineral, with few specimens available on the market. Prices for high-quality mineral specimens are indicative and can vary significantly by source and rarity. Due to its scarcity, it is not commonly used in gem or jewelry forms. Values depend on origin, clarity, and presentation, with mineral specimens potentially ranging from EUR 500 to several thousand euros for exceptional examples.

Spiritual meaning and crystal therapy

Mantra
Peace flows through my heart

Spiritual meaning

Chiyokoite is a rare and gentle stone, believed to inspire inner peace and emotional clarity. It is traditionally associated with spiritual awakening and the quiet strength found within stillness.

Esoteric properties

Chiyokoite is said to support emotional balance and calm the mind. It is associated with fostering a deep sense of serenity and helping one connect with their inner truth.

Associated chakra

Chiyokoite is traditionally linked to the heart chakra, promoting emotional healing and compassion. Its soft energy is also believed to resonate with the crown chakra, encouraging spiritual awareness.

Crystal therapy use

In crystal therapy, chiyokoite is often used in meditation or placed on the heart chakra to support emotional healing. It can also be worn as jewelry to keep its calming energy close.

Information on crystal therapy is provided for cultural and traditional purposes only. It does not replace medical advice or treatment. Always consult a doctor for health issues.

Affirmations

Positive first-person sentences to repeat mentally or aloud while holding the crystal, during meditation or at the start of the day. They help focus intention and attune to the energy traditionally attributed to the stone.

  • I open my heart to love and peace.
  • I release fear and welcome clarity.
  • I trust the quiet wisdom within me.

Cleansing and recharging

Pulizia & Ricarica

To cleanse chiyokoite, place it under moonlight or use sound bowl vibrations. Avoid salt, direct sunlight, or water immersion, as it is sensitive to these elements.

Guided meditation

Sit comfortably and hold chiyokoite in your hands. Breathe deeply, focusing on the stone’s gentle energy. Visualize a soft light surrounding you, bringing calm and clarity to your heart.

Body placement

Posizionamento sul corpo

Chakra: heart

Place chiyokoite over the heart chakra during therapy lay-down sessions to support emotional healing and open the heart to compassion and love.

  • Corona
  • Terzo occhio
  • Gola
  • Cuore
  • Plesso solare
  • Sacrale
  • Radice

Feng Shui

In feng shui, chiyokoite can be placed in the southeast sector for wealth and abundance or in the southwest for love and harmonious relationships.

Pairings with other crystals

Chiyokoite pairs well with rose quartz to enhance heart-centered healing, and with amethyst to deepen spiritual awareness and calm the mind.

Crystal bath

Not recommended for direct water immersion — instead place the stone NEXT to the bathtub or use indirect elixir method.

Secondary chakras

Frequently asked questions

Yes, chiyokoite is considered extremely rare, with very few known localities and limited availability in mineral collections.