Here is some useful information I pulled together on the metaphysical properties of crystals, gemstones, fossils and a few other curios used in divination and psychic work.
Amber - Carrier of Akashic Record, fifth element which binds together earth, air, fire and water.
Amethyst - Enhances all psychic abilities. Third eye, Crown and Heart vibrations.
Apophyllite - Carrier of Akashic Records. Grounds body.
Aquamarine - Clarifies and focuses intuition.
Atacamite - Opens third eye. Develops psychic abilities, promotes contact with spiritual realm, aids visions.
Azeztulite - Very high frequency. Opens Third Eye Crown and Higher Crown chakras.
Azurite - Third eye vibration which resonates up to Crown. Heightens spiritual connections, psychic communication.
Beryl - Promotes psychic awareness and understanding, prevents psychic manipulation.
Bloodstone - Facilitates ancestral connections, grounding and centering, heightens psychic awareness, protective.
Bones - Facilitates shamanic work. Psychic strength. Oracular messages read when burned in fire.
Calcite - Facilitates channeling, astral travel and out-of-body experiences.
Carnelian - Enhances clairvoyant, clairaudient, dowsing and psychometric abilities. Facilitates world to otherworld transitions (and vice versa).
Celestite - Facilitates dream recall, clairvoyant communication and shamanic out-of-body journeying.
Chrysocolla - Enhances psychic awareness and visioning, opens third eye, wards away illusions.
Citrine - Facilities psychic awareness, dispels fear, protects.
Crystal quartz - Universal crystal, expands psychic abilities, extraordinary psychic protection, balances chakras.
Emerald - Strong psychic protection, enhances mental powers, understanding of unfolding layers of wyrd.
Flint - Thunderstone, protection, divining gold.
Fluorite (purple/violet) - Protection from psychic vampires, enhances psychic abilities and intuition, augments mediumship, connections to spirit guides, clarifies psychic messages, balances chakras.
Fossils - Carrier of Akashic Record, primal memories, ancient earth spirits. Witch stones.
Hematite - Grounding, visualization, divination. Drawing power.
Herkimer diamond - Enhances visioning, dream recall, past life recall, clairvoyance, connecting with spirit guides.
Holey stones - Augments psychic awareness, visioning, protection.
Iolite - Activates and augments psychic powers.
Jasper (black) - Promotes prophetic visioning.
Jet - Witch's amber. Carrier of Akashic Record, ancient earth energies. Strengthens psychic awareness. Protective.
Kyanite - Promotes channeling, strengthens psychic awareness, enhances intuition, increases telepathy.
Labradorite - Wizard's stone. Increases psychic abilities, heightens intuition and precognition, bridges physical and spiritual realms, promotes connection to spirit guides.
Lapis lazuli - Prevent psychic attacks, increases psychic abilities, intuition, clairvoyance and spirit guide connections. Enables access to ancient wisdom and truth.
Malachite - Third eye vibration which resonates up to Crown. Heightens spiritual connections, psychic communication.
Merlinite - Facilitates travel to past and future lives "becoming", carrier of ancient knowledge.
Mica - Expands psychic awareness, protection.
Moldavite - Facilitates travel to past and future lives "becoming", carrier of ancient knowledge.
Moonstone - Enhances spirit guide communication, intuition. Especially good for divination using tarot cards, rune stones, crystal balls and pendulums.
Muscovite - Opens connection to highest realms, aids in astral travel, especially good for scrying divination.
Obsidian - Enhance psychic abilities and scrying divination. Balances mind, body and spirit. Blocs psychic attacks. Aids channeling and clairaudience.
Opal - Induces and enhances psychic visions.
Petrified wood - Carrier of Akashic Record, enhances past life recall and connections to the ancients, protective.
Preseli bluestone - Opens doorways into other dimensions, stimulates instinctive knowing, promotes far memory and access to ancient knowledge, enhances connections to ancestors, focuses the mind, strengthens will power.
Sapphire - Activates third eye and second sight. Develops and enhances psychic powers, telepathic abilities, precognition, astral traveling, out-of-body experiences, visions. Heightens intuition. Facilitates spirit world communication.
Seer stones - Promotes visions, past life recall, time travel, unlocking deep mysteries.
Shattuckite - Activates psychic abilities. Clarifies visions, promotes understanding of channeled messages.
Shells - Increases intuition, stimulates psychic abilities, releases fear, balances chakras. Protection.
Sodalite - Clarifies perceptions and promotes understanding of spiritual experiences and channeled messages.
Sugilite - Psychic shielding. Protects against psychic attacks and negative entities. Opens third eye, crown and soul star. Develops psychic abilities, aids channeling and automatic writing.
Tiger's eye - Protection. Aids with past life divination.
Turquoise - Strengthens psychic powers. Increases attunement to and opens connection to spirit world. Enhances clairaudient and clairvoyant abilities. Cleanses and opens chakras. Psychic protection.
Viking sunstone - Focuses and clarifies psychic powers, visions. Facilitates channeling, astral travel and out-of-body experiences. Aids safe navigation through otherworlds and dimensions.