Aura accessories are wearable tools designed to interact with your energy field. They function as talismans, amplifiers, or shields. By choosing specific materials (like copper or gold) and stones (like amethyst or tourmaline), you can consciously select jewelry that strengthens your aura, supports energetic boundaries, or enhances your intuitive awareness throughout the day. The practice has roots stretching back thousands of years across every major culture, from Egyptian scarab amulets to Tibetan prayer beads to medieval European talismanic rings.
- Metals like gold, silver, and copper have distinct energetic properties recognized across multiple spiritual traditions and supported by their measurable physical characteristics.
- Crystals such as quartz and tourmaline exhibit the piezoelectric effect, generating measurable electrical charge when compressed, which provides a physical basis for their energetic reputation.
- Sacred symbols engraved or formed into jewelry carry intention and cultural meaning that can function as focal points for awareness.
- Placement on the body matters: different body locations correspond to different energy centres (chakras), and jewelry placed at those points is believed to support the associated qualities.
- Cleansing and programming your accessories with intention is considered important for maintaining their energetic function.
The Ancient History of Sacred Adornment
Humans have worn objects for spiritual protection and energetic enhancement for at least 100,000 years. Shell beads from Blombos Cave in South Africa, dated to approximately 75,000 BCE, are among the earliest known examples of personal ornamentation, and anthropologists suggest that the impulse to adorn the body has always carried meaning beyond the aesthetic.
In ancient Egypt, amulets were integral to both daily life and funerary practice. The scarab beetle, representing rebirth and the solar cycle, was carved from lapis lazuli, carnelian, and turquoise and worn as rings, pendants, and brooches. The Eye of Horus (wadjet) amulet was believed to provide healing, protection, and restoration. Egyptian priests prescribed specific amulets for specific conditions, creating what amounted to a pharmacopoeia of wearable energy tools.
Ancient Greece and Rome carried forward the amulet tradition. The Greeks wore protective phylacteria (inscribed metal tablets rolled and placed in cases), while Romans favoured bullae (locket-like containers holding protective substances) for children and soldiers. Pliny the Elder (23-79 CE) catalogued dozens of protective stones and metals in his Natural History, providing one of the earliest systematic treatments of the energetic properties of minerals.
In medieval Europe, the tradition merged with Christian symbolism. Talismanic rings inscribed with prayers, saints' names, or astrological symbols were worn by clergy and nobility alike. The lapidary tradition, a genre of texts describing the spiritual and healing properties of stones, flourished from the 11th through the 15th centuries. Hildegard of Bingen (1098-1179), the German Benedictine abbess, wrote extensively about the healing properties of gemstones in her Physica, integrating Christian theology with empirical observation.
In the Hindu and Buddhist traditions, malas (prayer bead necklaces) serve simultaneously as meditation tools and energetic accessories. The 108 beads of a traditional mala correspond to sacred numerical symbolism, and the choice of material (rudraksha seeds, sandalwood, specific crystals) adds an additional layer of energetic intention. Tibetan Buddhist practice includes wearing protective amulets (gau) containing sacred texts, herbs, and consecrated substances.
The Energetics of Metals
Different metals carry different energetic associations across traditions, and their physical properties provide an interesting parallel to these spiritual attributions.
Gold has been associated with solar energy, vitality, abundance, and divine connection across virtually every culture that has worked with it. Gold is the most chemically stable of all metals, resisting oxidation and corrosion. It is also an excellent electrical conductor. In Ayurvedic medicine, gold (swarna) is used therapeutically in the form of bhasma (ash preparations) and is associated with strengthening immunity and vitality. In Western alchemical tradition, gold represents the culmination of the Great Work, the perfected state of matter and consciousness.
Silver carries lunar associations: intuition, receptivity, emotional balance, and psychic sensitivity. Silver is the most electrically conductive of all metals and also the most thermally conductive. Its association with the Moon spans Egyptian, Greek, Hindu, and Celtic traditions. Silver has documented antimicrobial properties (oligodynamic effect), which may have contributed to its ancient reputation as a purifying metal. In many traditions, silver jewelry is preferred for psychic work and dream enhancement.
Copper is associated with Venus, love, beauty, and healing. It is the third most conductive metal after silver and gold. Copper bracelets have been used in folk medicine for arthritis for centuries, and while the scientific evidence for this specific application is mixed, copper's conductivity and reactivity with skin chemistry make it one of the more physically interactive metals to wear. In Hindu tradition, copper vessels are used to store water for health benefits, and copper rings are worn for astrological remediation.
Iron and steel carry Mars associations: strength, protection, grounding, and warrior energy. Iron is ferromagnetic, meaning it generates and responds to magnetic fields, a physical property that parallels its energetic reputation as a grounding and protective metal. In many folk traditions, iron is believed to repel negative spirits and faerie enchantments. Wearing iron jewelry (such as hematite rings) is a common practice for energetic grounding.
Mixing metals is encouraged in many energy traditions. Bi-metal jewelry combining gold and silver is believed to balance solar and lunar currents in the body, promoting harmony between action and receptivity. The Indian practice of wearing a copper ring on one hand and a silver ring on the other draws on a similar principle of energetic polarity.
Crystal Jewelry and the Piezoelectric Effect
The energetic reputation of crystals receives partial support from a measurable physical phenomenon: the piezoelectric effect. Discovered in 1880 by Jacques and Pierre Curie, piezoelectricity is the generation of electrical charge in certain materials when they are compressed, bent, or subjected to mechanical stress. Quartz, tourmaline, and topaz are all piezoelectric.
This is not a metaphysical claim. It is standard physics, used in billions of devices worldwide. Every quartz watch, every ultrasound machine, every microphone and speaker that uses a piezoelectric element relies on this property. When you wear a quartz crystal against your body, the pressure and warmth of your skin generate a small but real electrical charge across the crystal's surface.
The practical question is whether this charge is large enough to have a biological effect. Research in biomedical engineering has shown that piezoelectric materials can stimulate tissue healing in laboratory settings, particularly bone regeneration. However, the voltages involved in wearing a crystal pendant (microvolt to low millivolt range) are substantially lower than those used in clinical electrotherapy. The effect exists, but its magnitude in a jewelry context remains an open scientific question.
Tourmaline adds another physical dimension: it is both piezoelectric and pyroelectric, meaning it generates charge in response to temperature changes as well as pressure. When tourmaline warms against your skin, it generates a measurable surface charge. Black tourmaline (schorl) is the variety most commonly used in protective jewelry, and its electrical properties are among the most pronounced of any gemstone.
Beyond the piezoelectric effect, crystals exhibit distinct electromagnetic signatures based on their mineral composition, crystal lattice structure, and colour (which reflects their light absorption spectrum). Whether these signatures interact meaningfully with the human biofield remains a subject of ongoing research and debate, but the physical uniqueness of each mineral is not in question.
Guide to Stones for Aura Support
The following stones are among the most commonly used in aura-supportive jewelry. For each, the traditional energetic association is listed alongside any notable physical properties:
Clear Quartz is called the "master healer" and amplifier across traditions. It is piezoelectric and the most abundant mineral on Earth. Traditionally associated with all chakras and all intentions, clear quartz is considered a universal support stone. It is the foundation of most crystal grids and energy tool kits.
Amethyst (purple quartz) is associated with the crown chakra, spiritual awareness, calm, and sobriety. The ancient Greeks believed amethyst prevented drunkenness (the name derives from a-methystos, "not intoxicated"). It is piezoelectric like all quartz varieties and is one of the most widely available crystal jewelry stones.
Black Tourmaline (schorl) is the primary stone for energetic protection. It is both piezoelectric and pyroelectric. Traditionally, it is believed to absorb negative energy, ground the wearer, and create an energetic shield. It is commonly worn as a pendant, bracelet, or carried in a pocket.
Rose Quartz is associated with the heart chakra, love, compassion, and emotional healing. It is the stone most commonly recommended for relationship work and self-love practices. Like all quartz, it is piezoelectric.
Lapis Lazuli has been prized since ancient Sumerian and Egyptian times. Associated with the third eye chakra, wisdom, truth, and inner vision, it was ground into the pigment ultramarine by Renaissance painters and used in funerary masks by Egyptian royalty. It contains lazurite, pyrite, and calcite in a complex mineral matrix.
Hematite is an iron oxide mineral associated with grounding, protection, and mental clarity. Its high iron content gives it a metallic lustre and makes it one of the heaviest gemstones used in jewelry. It is weakly magnetic in some forms and is the most commonly recommended stone for grounding and root chakra work.
Citrine (yellow quartz) is associated with the solar plexus chakra, personal power, confidence, and abundance. It is one of the few stones traditionally believed to not accumulate negative energy, making it a low-maintenance choice for daily wear.
Labradorite is associated with psychic protection, intuition, and transformation. Its distinctive iridescent optical effect (labradorescence) is caused by light interference within the crystal's layered internal structure. It is favoured by practitioners who work in environments where they encounter many different energies.
Sacred Symbols in Jewelry
Beyond material composition, the form and symbolism of jewelry carries meaning. Sacred symbols function as focal points for intention, concentration, and energetic alignment. Some of the most commonly found symbols in aura accessories:
The Hamsa (Hand of Fatima/Hand of Miriam) is a palm-shaped amulet found across Middle Eastern, North African, Jewish, and Islamic traditions. It represents protection against the evil eye and is one of the most ancient and cross-culturally consistent protective symbols.
The Eye of Horus (Wadjet) from ancient Egypt represents healing, protection, and restoration. The six components of the eye correspond mathematically to fractions that sum to 63/64, with the missing 1/64 traditionally supplied by the god Thoth, representing the role of divine magic in completing wholeness.
The Om symbol from Hindu and Buddhist traditions represents the primordial sound of creation. Wearing Om as a pendant is intended to align the wearer with universal consciousness and promote spiritual awareness.
The Tree of Life appears in Norse (Yggdrasil), Kabbalistic (Etz Chaim), and Celtic traditions. It represents the interconnection of all life, the link between the earthly and the divine, and the cycles of growth and renewal.
The Ankh from ancient Egypt represents eternal life and the union of masculine and feminine principles. It is one of the oldest known symbols and has been adopted across traditions as a symbol of vitality and spiritual continuity.
Sacred geometry forms such as the Flower of Life, Metatron's Cube, and the Sri Yantra encode mathematical relationships that practitioners believe reflect the organizing principles of the universe. Wearing these forms as pendants is intended to align the wearer's energy field with these patterns.
Body Placement and the Chakra System
Where you wear your jewelry is as significant as what it is made of. The body placement of an accessory determines which energy centre it is most likely to interact with, according to the chakra system and other body-energy maps.
Crown of the head (crown chakra): Hair pins, tiaras, and head chains placed at the top of the head correspond to the crown chakra (Sahasrara). Amethyst, clear quartz, and selenite are commonly used at this location to support spiritual connection and higher awareness.
Forehead/brow (third eye chakra): Bindis, circlets, and brow chains placed between the eyebrows correspond to the third eye chakra (Ajna). Lapis lazuli, amethyst, and labradorite at this location support intuition and inner vision.
Throat (throat chakra): Chokers and short necklaces that rest at the throat correspond to Vishuddha. Blue stones such as lapis lazuli, sodalite, and blue lace agate at this position support clear communication and authentic expression.
Heart centre (heart chakra): Pendants that rest at the sternum correspond to the heart chakra (Anahata). Rose quartz, green aventurine, and emerald are traditionally placed here for emotional healing and compassion.
Wrists (minor chakras): Bracelets interact with the minor chakras of the wrists, which in acupuncture correspond to important meridian points. Copper bracelets, crystal bead bracelets, and bangles are the most common wrist accessories for energetic purposes.
Fingers (planetary associations): In Vedic astrology (Jyotish), each finger corresponds to a planet, and wearing a specific gemstone on the corresponding finger is a formal remedial practice. The ring finger corresponds to the Sun, the index finger to Jupiter, the middle finger to Saturn, and the little finger to Mercury.
Ankles and feet (root chakra): Anklets and toe rings connect to the root chakra (Muladhara) and the earth element. Hematite, garnet, and obsidian at the feet support grounding and physical vitality.
- Take inventory of the jewelry you currently own. Group each piece by the body location where you wear it.
- Note the materials and stones in each piece. Look up their traditional chakra and energetic associations.
- Notice any patterns. Are certain chakras over-represented in your jewelry collection? Are others neglected?
- Consider whether these patterns reflect areas of your life that receive extra attention versus areas you tend to avoid or neglect.
- Experiment with deliberately wearing a piece that corresponds to an underrepresented chakra for one week. Journal any observations about how you feel.
Cleansing and Programming Your Jewelry
Most traditions that work with energetic jewelry emphasize the importance of cleansing and programming (sometimes called "charging" or "consecrating") your accessories. The principle is that crystals and metals absorb and hold energetic imprints from their environment and from the people who handle them. Cleansing removes accumulated imprints; programming sets a fresh intention.
Cleansing methods:
- Running water: Hold the piece under cool running water for 30 to 60 seconds while visualizing accumulated energy washing away. Not suitable for water-sensitive stones like selenite, malachite, or turquoise.
- Moonlight: Place jewelry on a windowsill or outdoors under the full moon overnight. This is the gentlest method and is safe for all materials.
- Smoke cleansing: Pass the piece through the smoke of sage, palo santo, or incense. This method draws on smudging traditions and is quick and effective for daily use.
- Sound: Place the piece near a singing bowl, tuning fork, or bell and allow the vibration to clear accumulated energy. Sound cleansing is safe for all materials and can cleanse multiple pieces simultaneously.
- Earth burial: Bury the piece in clean soil for 24 hours to allow the earth to absorb and neutralize accumulated energy. This method is strong but requires that the piece be carefully wrapped or placed in a container to prevent physical damage.
Programming (setting intention):
- Hold the cleansed piece in both hands.
- Close your eyes and take several slow, deep breaths.
- State your intention clearly, either aloud or silently. Be specific: "I program this amethyst pendant to support my spiritual awareness and protect my energy throughout the day."
- Visualize the intention as light flowing from your hands into the piece.
- Wear the piece. Many practitioners recommend cleansing and reprogramming weekly or after any particularly intense experience.
How to Choose Aura Accessories
Selecting the right aura accessories involves balancing intuition with knowledge. Here are guidelines for choosing pieces that will serve your energetic needs effectively:
Start with your intention. What do you need most right now? Protection? Grounding? Heart opening? Clarity? Let the need guide the stone and metal choice rather than choosing based on appearance alone.
Trust your physical response. When possible, handle stones and jewelry before purchasing. Notice which pieces you are drawn to and which you instinctively avoid. Many practitioners report that the "right" stone produces a subtle but noticeable physical sensation: warmth, tingling, or a sense of comfort.
Prioritize natural materials. Synthetic stones, resin, and plastic are energetically inert. They do not exhibit piezoelectric or pyroelectric properties and do not carry the mineral signatures that give natural stones their energetic character. Glass and synthetic crystals lack the internal lattice structure that defines a true crystal.
Consider quality over quantity. A single well-chosen piece worn consistently will generally serve you better than a large collection worn randomly. Depth of relationship with a particular stone or piece develops over time.
Check for ethical sourcing. The mining conditions and supply chain of gemstones carry their own energetic imprint. Conflict minerals and stones mined under exploitative conditions carry a different energetic charge than ethically sourced materials. Ask vendors about their sourcing practices.
Let pieces go when they have served their purpose. If a stone breaks, loses its lustre, or simply stops feeling right, it may have completed its work. Thank it and release it (returning it to the earth is traditional) rather than forcing continued use.
Daily Practice with Wearable Energy Tools
Aura accessories work best when incorporated into a conscious daily practice rather than worn passively. Here is a framework for working with your jewelry as active energetic tools:
Morning ritual: Before putting on your jewelry each morning, hold each piece briefly, take a breath, and reaffirm its intention. This takes only a few seconds per piece but activates conscious engagement with the energy tool rather than habitual wearing.
Midday check-in: At some point during the day, touch or hold your primary piece and take a conscious breath. Notice how you feel. Has the energy shifted? Do you feel supported? This brief check-in reinforces the connection between you and the tool.
Evening removal: When you remove your jewelry at night, place each piece on a dedicated tray or altar space. Some practitioners keep a small selenite plate or clear quartz cluster as a charging station for their daily-wear pieces. The removal itself can become a ritual of releasing the day's accumulated energy.
Weekly cleansing: Set aside time once a week to cleanse all your regularly worn pieces using one of the methods described above. Many practitioners align this with the lunar cycle, cleansing during the waning moon and setting fresh intentions at the new moon.
- Choose one piece of jewelry to work with consciously for seven days.
- On day one, cleanse and program the piece with a clear intention.
- Each morning, hold the piece and reaffirm its purpose before putting it on.
- At midday, touch the piece and note your emotional and energetic state in a brief journal entry.
- Each evening, remove the piece and note any observations from the day.
- At the end of seven days, review your journal. Did you notice any patterns, shifts, or experiences you associate with conscious engagement with this piece?
- Use your observations to decide whether to continue with this piece, try a different one, or modify your intention.
Cross-Traditional Perspectives
The practice of wearing objects for energetic purposes is one of the most universal features of human spirituality. Examining the cross-traditional parallels reveals a remarkable convergence:
Ayurvedic gem therapy (Ratna Shastra) is a formal branch of traditional Indian medicine that prescribes specific gemstones set in specific metals and worn on specific fingers to balance the planetary influences on the individual's constitution. The system is highly codified, with each of the nine planets (Navagraha) associated with a primary gemstone and several substitute stones.
Traditional Chinese medicine uses jade extensively as both a decorative and therapeutic material. Jade is associated with kidney health, longevity, and the harmonization of yin energy. Jade rollers, bangles, and pendants are part of a continuous tradition stretching back to the Neolithic period in China.
Native American traditions use turquoise, coral, and silver in sacred jewelry that carries both protective and ceremonial significance. Navajo, Zuni, and Hopi silverwork combines skilled craftsmanship with deep spiritual intention, and the materials used carry specific tribal meanings and stories.
West African traditions use cowrie shells, coral beads, and specific metals in jewelry that signifies spiritual status, protection, and connection to the ancestors and the orishas. The tradition has been carried through the African diaspora into Yoruba, Santeria, and Candomble practices in the Americas.
Celtic traditions worked extensively with iron, bronze, and silver, creating torcs (neck rings), brooches, and arm bands whose intricate knotwork designs were believed to trap negative spirits and create continuous loops of protective energy. The unbroken line of Celtic knotwork is itself a protective symbol, representing the continuity of life and the absence of beginning or end.
The Book of Stones: Who They Are and What They Teach by Robert Simmons and Naisha Ahsian
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Frequently Asked Questions
Can I mix gold and silver jewelry?
Yes. In many energy traditions, mixing gold and silver is actively encouraged. The combination balances solar (gold) and lunar (silver) currents in the body, promoting harmony between active and receptive qualities. Bi-metal jewelry that incorporates both metals in a single piece is designed specifically for this purpose.
What about diamonds?
Diamonds are intense amplifiers. They amplify whatever you are already feeling or intending. If you are in a positive state, diamonds boost it. If you are in a negative or depressive state, they can intensify that as well. This is why diamonds are considered powerful but not necessarily gentle. Wear them with awareness of your current emotional and energetic state.
Is plastic or synthetic jewelry energetically useful?
Plastic is an electrical insulator, meaning it blocks energy flow rather than conducting or modulating it. It is energetically neutral. It will not harm you, but it does not offer the conductivity, piezoelectric properties, or mineral frequencies of natural materials. Glass and lab-created crystals similarly lack the natural lattice structure that gives genuine crystals their unique properties.
Why did my crystal jewelry break?
Crystal breakage is interpreted in several ways across traditions. The most common explanation is that the crystal absorbed a large amount of negative energy to protect you and reached its capacity. Another interpretation is that you have outgrown the crystal's frequency and it has completed its purpose. Physically, crystals can develop internal fractures from temperature changes, impact, or chemical exposure. Regardless of the cause, the traditional practice is to thank the crystal, bury the fragments in earth, and choose a new piece when you feel ready.
How often should I cleanse my jewelry?
Most practitioners recommend weekly cleansing for daily-wear pieces. However, cleanse after any particularly intense experience (conflict, illness, crowded environments, emotional processing). If a piece suddenly feels heavy, uncomfortable, or "wrong," it needs immediate cleansing regardless of when it was last done. Some stones like citrine and selenite are traditionally believed to be self-cleansing and require less maintenance.
Can I sleep wearing crystal jewelry?
This depends on the stone and your sensitivity. Calming stones like amethyst, rose quartz, and lepidolite are commonly worn to bed and placed under pillows to support restful sleep. High-energy stones like carnelian, tiger's eye, or citrine may be too stimulating for sleep and are better removed at bedtime. Experiment and notice how your sleep quality responds.
Do I need to believe in crystal energy for it to work?
This is debated. Skeptics argue that any benefit is placebo effect, which is the focusing of attention and expectation producing a real subjective change. Practitioners argue that the physical properties of crystals (piezoelectricity, electromagnetic frequency, mineral composition) operate independently of belief. A practical middle ground: whether the mechanism is physical, psychological, or both, the consistent use of intentional objects as mindfulness anchors has documented benefits for focus, emotional regulation, and self-awareness.
What is the best stone for beginners?
Clear quartz is the most commonly recommended starting stone because it is considered a universal amplifier compatible with all intentions and all chakras. Black tourmaline is an excellent second choice for those who feel they need energetic protection. Rose quartz is recommended for those focused on emotional healing and self-compassion. Start with one stone, develop a relationship with it, and expand gradually.
Can jewelry absorb other people's energy?
This is a core principle in most crystal and metal energy traditions. Jewelry is believed to absorb energetic imprints from anyone who handles it, from the environments it passes through, and from the emotions of the wearer. This is why cleansing newly purchased jewelry before wearing it is standard practice, and why lending personal jewelry to others is discouraged in many traditions.
What is the difference between an amulet and a talisman?
In traditional usage, an amulet is a protective object designed to ward off harm, disease, or negative energy. A talisman is designed to attract a specific positive quality: love, wealth, wisdom, or success. In practice, many pieces of jewelry function as both. A black tourmaline pendant, for example, is an amulet (protecting against negativity) and can also be programmed as a talisman (attracting grounding and stability).
Are there any stones I should avoid?
Some stones contain minerals that can be toxic if ingested or dissolved in water. Malachite, cinnabar, galena, and orpiment should never be used to make crystal-infused water (elixirs). For wearing as jewelry, these stones are safe as long as they are sealed and polished and you do not lick or ingest fragments. When in doubt, research the mineral composition of any unfamiliar stone before using it in proximity to food, water, or broken skin.
What is Aura Accessories?
Aura Accessories is a practice rooted in ancient traditions that supports mental, spiritual, and physical wellbeing. It has been studied in modern research and found to offer measurable benefits for practitioners at all levels.
How long does it take to learn Aura Accessories?
Most people experience initial benefits from Aura Accessories within a few weeks of consistent practice. Deeper understanding develops over months and years. A few minutes of daily practice is more effective than occasional long sessions.
Is Aura Accessories safe for beginners?
Yes, Aura Accessories is generally safe for beginners. Start with short sessions of 5-10 minutes and gradually increase. If you have a health condition, consult a qualified instructor or healthcare provider before beginning.
What are the main benefits of Aura Accessories?
Research supports several benefits of Aura Accessories, including reduced stress, improved focus, better sleep, and greater emotional balance. Regular practice also supports spiritual development and a deeper sense of connection.
Can Aura Accessories be practiced at home?
Yes, Aura Accessories can be practiced at home with minimal equipment. Many practitioners find that a quiet space, a consistent schedule, and basic guidance (through books, apps, or online resources) is sufficient to begin.
How does Aura Accessories compare to other spiritual practices?
Aura Accessories shares principles with many contemplative traditions worldwide. While specific techniques vary across cultures, the core intention of cultivating awareness, presence, and inner clarity is common to most spiritual paths.
What should I know before starting Aura Accessories?
Before starting Aura Accessories, it helps to understand its origins, set a realistic intention, and find reliable guidance. Consistency matters more than duration. Many practitioners benefit from joining a community or finding a teacher for accountability and support.
Are there scientific studies supporting Aura Accessories?
Yes, a growing body of peer-reviewed research supports the benefits of Aura Accessories. Studies published in journals such as Mindfulness, the Journal of Alternative and Complementary Medicine, and Frontiers in Psychology document measurable effects on stress, cognition, and wellbeing.
Sources and References
- Simmons, R. and Ahsian, N. (2005). The Book of Stones: Who They Are and What They Teach. North Atlantic Books.
- Cunningham, S. (1988). Crystal, Gem and Metal Magic. Llewellyn Publications.
- Hall, J. (2003). The Crystal Bible: A Definitive Guide to Crystals. Walking Stick Press.
- Currie, J. and Currie, P. (1880). "Development by pressure of polar electricity in hemihedral crystals with inclined faces." Bulletin de la Societe Mineralogique de France, 3, 90-93.
- Pliny the Elder. (77 CE). Naturalis Historia, Book XXXVII (On Gemstones).
- Hildegard of Bingen. (c. 1150). Physica (Book IV: On Stones).
- Leadbeater, C.W. (1927). The Chakras. Theosophical Publishing House.
- Frawley, D. (2001). Ayurvedic Astrology: Self-Healing Through the Stars. Lotus Press.
- Budge, E.A.W. (1930). Amulets and Superstitions. Oxford University Press.
- Webster, R. (2004). Amulets and Talismans for Beginners. Llewellyn Publications.