Crystal Encyclopedia

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

Turritella Agate

The Ancient Snail Spiral of Steady Resolve

About the stone

Turritella Agate crystal
Photo: James St. John, CC BY 2.0, via Wikimedia Commons

Incorrectly named for the sea snail, this agate, found in the Green River Formation in Wyoming is in fact, a land snail. Named for the genus Turritella, it should be called Elimia Tenera. However, the name has stuck. This stone is a brown to black chalcedony, cryptocrystalline quartz, SiO2. In other words, made out of the same material as quartz crystal clusters and points, but with a chemical makeup too small to see with the naked eye. And this agate has the unique and special makeup of being grown around a graveyard of snail shells. These shells appear white and are very small, 10mm to 50mm normally. In the last 50 years this stone has been favored for jewelry and specimen use.

Mineral data

  • Chemical composition: Turritella Agate is a brown to black chalcedony, a cryptocrystalline form of quartz, silicon dioxide (SiO2), that has grown around a bed of small fossil snail shells from the Green River Formation in Wyoming.
  • Hardness: 6.5 to 7 on the Mohs scale.
  • Color: Brown to black stone holding many small white spiral shells.

Metaphysical data

Turritella Agate, a graveyard of ancient snail shells held in stone, has been utilized in metaphysical practices to encourage humility, grounding and trust in one's true self.

Grounding and Humble Energy

  • Turritella Agate is believed to help strong egos let go of control while remaining a stone of power and strength for the true self.
  • It is thought to embody healthy choices and morality, and to aid in being humble in word and deed.

Emotional Healing

  • The stone helps introverts come out of their shell, rid themselves of insecurity and let go of past beliefs that no longer serve.
  • It is said to help one regain composure, ground, think before acting and trust their own intuition.

Harmonizing Energy Centers

  • Turritella Agate is associated with the root chakra, the center of stability, safety and a solid place in the world.
  • Its rows of tiny spiral shells make a natural visual aid for slow, steady breathing during grounding meditation.

Zodiac Associations

  • The stone is linked to the zodiac signs of Cancer and Taurus, both loyal and protective signs that cherish security.
  • In numerology it vibrates to the number 8, linked to balance, resilience and quiet authority.

Spiritual Growth

  • Because it grew around a graveyard of ancient shells, the stone is a symbol of life cycles, memory and the wisdom of time.
  • It is used by those who wish to stay strong, stay humble and keep faith in their own inner knowing.

Physical Healing

  • Turritella Agate is not a substitute for professional medical advice; tradition links it with reducing swelling, fluid retention and fatigue.
  • Persistent swelling or tiredness deserves a medical evaluation, and the stone is only a calming token alongside proper care.

Care and handling

Turritella Agate is a hard, durable chalcedony with small fossil shells set inside. Clean it with lukewarm water, mild soap and a soft cloth, then dry it. Avoid harsh chemicals, sudden temperature changes and heavy impacts, and do not soak dyed or sealed pieces for long periods.

Individual experiences with Turritella Agate vary. Use it mindfully as a steady symbol of humility and resolve.