Crystalis Crystal Dictionary

Aqua Aura Quartz

The Blue-Gold Frequency

Your voice wants more reach than your fear allows. Quartz fused with gold takes on an electric blue sheen that looks built for transmission. Some truths travel farther once the signal brightens.

Intent

Communication
Stress ReliefSpiritual ConnectionClarity & Focus
Somatic note

Aqua aura quartz addresses the throat, eyes, and upper chest, the zones most involved in orienting outward while staying regulated enough to speak and connect. It...

The Meaning

Aqua Aura Quartz in the Crystalis dictionary

Some truths are clear and still fail to travel. The message exists. The room is simply louder than the person carrying it.

Quartz already knows line and signal. The bonded metal changes the reach. Suddenly the stone looks charged enough to cross a greater distance. Useful for anyone tired of being accurate in private.

Stone Lore

Stories carried through time

Cultural notes are presented as tradition and historical context — stories carried through time.

Unknown

Where Aqua Aura Came From

Aqua aura quartz is a child of the 1980s, born where ancient material met modern technology. Quartz itself has been used across virtually every human culture (see the quartz entry in this dictionary), but aqua aura first appeared in the crystal healing market in the 1980s, coinciding with the growth of the New Age movement and advances in PVD coating technology. From the 1990s onward it became one of the most popular "aura" treated quartz varieties, and its success spawned numerous variations, including Angel Aura, Flame Aura, and Tanzan Aura.

Historical note

Trade Name Origins

"Aqua" refers to the blue-green water-like color; "Aura" references the metaphysical concept of the human energy field (aura), suggesting the stone works on the auric body. The name is purely a marketing creation, there is no geological or...

Unknown

Earth Record

Mineralogy and formation

Aqua aura quartz begins as ordinary clear quartz and acquires its blue by an added optical skin. The quartz grew geologically in a silica rich environment, typically hydrothermal veins or pegmatitic cavities, where trigonal SiO2 crystals could develop from fluid or melt. Afterward, a thin layer of vaporized gold was bonded to the surface in a controlled deposition process. The electric blue color is therefore not a bulk property of the quartz and not the native color of metallic gold.

It arises when light meets the coated interface and interference effects shift what the eye receives back.

The geologic conditions belong entirely to the quartz substrate. Silica saturated fluid, time, open space, and cooling gradients built the original crystal. The later surface treatment belongs to modern materials engineering. Gold is vaporized and deposited onto the quartz in vacuum so that a durable film bonds to the crystal exterior. The interface between transparent silica and thin metallic coating becomes an optical device.

Color depends on film thickness, reflectance, and interference rather than on structural defects within the quartz lattice. As with angel aura quartz, the scientific interest lies in the layered history: one formation path in nature, one in fabrication.

Quartz remains trigonal throughout. Its framework of linked SiO4 tetrahedra, spiral internal order, prism habit, and conchoidal fracture are unchanged. The gold coating does not alter the interior crystal system. It changes the boundary conditions, literally the crystal's skin. This distinction matters because the specimen's identity is twofold. The body is natural quartz. The blue transmission effect is engineered. What looks like a radical change in the stone's voice is actually a precise modification of how the outermost surface handles light.

From a mineralogical standpoint, aqua aura quartz is a study in signal enhancement. The quartz contributes transparency and structural reliability. The deposited gold contributes a more forceful optical return. Nothing in the lattice needed to become less itself for the message to travel farther. The bodily reading follows directly from the physics: an ordinary crystal given a brighter means of transmission, proof that a clear framework can carry more reach once the interface is tuned and the surface learns how to throw the light back with greater intensity.

ca₁a₂a₃120°Trigonal · Aqua Aura Quartz

Crystal system diagram represents the general trigonal classification. Diagram created by Crystalis for educational reference.

Trigonal structure

Chemical Formula
Substrate: SiO2 (silicon dioxide); Coating: Au (gold, with possible trace bonding at the Au-SiO2 interface)
Crystal System
Trigonal
Mohs Hardness
7
Specific Gravity
2.65 (quartz); slightly higher with gold film (negligible mass contribution at nanometer thickness)
Luster
Vitreous (quartz) with metallic iridescent blue overlay from gold film
Color
Blue
IMA Status
synthetic
IMA Number
None (artificial variety, not IMA-approved)
01

Mineral conditions gather

02

Structure begins to crystallize

03

Aqua Aura Quartz records place and pressure

(of source quartz) The treatment is performed in laboratories/factories, not a geological process. Source quartz comes from: Hot Springs, Arkansas, USA (common source of clear quartz points) Minas Gerais, Brazil Madagascar Any locality producing transparent to translucent quartz crystal points

Quartz forms in a wide variety of geological environments: hydrothermal veins, pegmatites, volcanic rocks, metamorphic rocks, and as a detrital component of sedimentary rocks. The quartz crystals used for Aqua Aura production are typically well-formed prismatic crystals from hydrothermal vein deposits, commonly sourced from Arkansas (USA), Brazil, or Madagascar. The piezoelectric properties of quartz, its ability to generate an electrical charge in response to applied mechanical stress due to the asymmetric distribution of charged atoms within the crystal structure, are well documented (Zhang et al.

, 2011, DOI: 10. 1111/j. 1551-2916. 2011. 04792. x). The gold vapor deposition process used to create Aqua Aura Quartz involves heating quartz crystals to approximately 871 degrees C (1600 degrees F) in a vacuum chamber, then introducing gold vapor which bonds at the atomic level to the quartz surface. This is a form of physical vapor deposition (PVD), where gold atoms are evaporated under vacuum and deposit onto the heated quartz surface.

The resulting gold film is extremely thin (nanometers to tens of nanometers), producing thin-film interference effects that create the characteristic bright blue iridescence. The blue color arises from the interaction of visible light with the nanometer-scale gold film, where specific wavelengths are selectively reflected based on film thickness through constructive and destructive interference (Pina-Diaz et al.

, 2017, DOI: 10. 1155/2017/2918509).

USA (treated)Brazil (base crystal)

Telling it apart

Aqua aura quartz is coated quartz, not a natural blue quartz variety, and the main deception is sellers describing the color as if it formed inside the crystal. The clearest field test is the coating itself: the intense electric blue to metallic rainbow color sits on the surface as a thin vapor deposited gold film, while the interior remains ordinary clear quartz with hardness 7 and no cleavage.

Genuine natural blue quartz does not show this uniform metallic skin. Real aqua aura pieces usually retain quartz crystal faces under a bright reflective blue sheen that looks almost plated. Edge wear, tiny uncoated chips, or clearer interiors under magnification expose the treatment fast. Dyed quartz looks more internal and uneven. Coated glass lacks quartz habit and often contains bubbles.

Ask whether the color is applied by vapor deposition. If the answer is hidden behind mystical language, assume the disclosure is being avoided. The price difference is significant because treated quartz is perfectly legitimate when labeled honestly, but pretending a lab coating is a natural rarity is a pricing trick, not mineral education.

Spotting the real thing

Aqua aura quartz is treated, and this should be disclosed. The blue comes from gold bonded to quartz through vapor deposition, not from natural processes. Tests: base crystal should be real quartz (Mohs 7).

The blue coating may show wear at contact points. The metallic sheen is uniform and consistent. If sold as "natural blue quartz," it is misrepresented.

Energetic Associations

How people most often work with Aqua Aura Quartz

Communication

A traditional association that gives Aqua Aura Quartz a clear intention pathway in practice.

Stress Relief

A traditional association that gives Aqua Aura Quartz a clear intention pathway in practice.

Spiritual Connection

A traditional association that gives Aqua Aura Quartz a clear intention pathway in practice.

Clarity & Focus

A traditional association that gives Aqua Aura Quartz a clear intention pathway in practice.

Primary pathway: Clarity & Focus

CalmClarity & FocusCommunicationInner Peace

Shut down & far away

- In dorsal vagal collapse

Suggested Placement: - Throat (5th chakra); the traditional association and where the blue color resonates - Third eye; for visual meditation work - Heart center; bridging heart coherence with communication - Held in dominant hand during difficult conversations

These associations come from tradition and reflective practice — a way of working with the stone, not a medical prescription.

Somatic Practice

Simple ways to work with Aqua Aura Quartz

Hold

Carry Aqua Aura Quartz in a pocket or place it over the heart center during a pause.

Meditate

Let the stone become a quiet tactile anchor while the breath slows.

Breathe

Breathe in softness. Breathe out tension. Keep the practice simple.

Journal

Write with Aqua Aura Quartz nearby to name the feeling without forcing a conclusion.

Bodywork

Rest the stone near the chest, hand, or bedside as a reminder to soften.

Environment

Place it where you want a visual cue for care, repair, or steadiness.

Field Instruction

The Gold Frequency

Gold bonded to quartz at 871 degrees. What survives that kind of heat becomes electric blue.

3 min protocol
  1. 1

    Hold the aqua aura quartz so light passes through it. The intense electric blue is not the quartz — it is a film of pure gold, bonded at approximately 871 degrees Celsius in a vacuum chamber. At that temperature, gold vaporizes and bonds atom-by-atom to the silicon dioxide surface. The quartz survived that heat because it is structurally stable at those temperatures. The blue you see is the result of gold at nano-thickness refracting visible light. (0:00–0:45)

  2. 2

    Close your eyes. Place the stone against your throat, holding it gently in the notch between your collarbones. The metallic blue overlay vibrates at a specific frequency of visible light — shorter wavelength than green, longer than violet. Breathe in for 4, out for 6. The throat is where internal signal becomes external expression. Let the stone rest there without agenda. (0:45–1:30)

  3. 3

    Move the stone to your dominant hand, wrapping your fingers around it. The gold coating is only nanometers thick, yet it completely transforms how the crystal appears. Breathe naturally. Ask: what thin layer of experience has completely changed how I appear to others? Not a disguise — a transformation. Something bonded through intensity, not applied casually. (1:30–2:15)

  4. 4

    Open your eyes. Hold the stone at arm's length and look at its electric blue against whatever is behind it. Gold is one of the least reactive elements — it does not corrode, tarnish, or degrade. What bonded to this quartz is permanent. Place the stone down. Shake your hands loosely at your sides for three seconds. Done. (2:15–3:00)

Stone Intelligence

The fact that makes Aqua Aura Quartz memorable

Clear quartz bonded with gold in a vacuum chamber at 1,600 degrees. The blue is not paint. It is gold atoms fused to silicon dioxide at the molecular level.

The science documents vapor deposition on piezoelectric crystal. The practice asks what changes when enhancement becomes permanent.

SCI

Precipitous weakening of quartz at the <i>α</i> – <i>β</i> phase inversion

Journal of the American Ceramic Society · 2020Read source

SCI

Piezoelectric Materials for High Temperature Sensors

Journal of the American Ceramic Society · 2011Read source

SCI

Research and Development Aspects on Chemical Preparation Techniques of Photoanodes for Dye Sensitized Solar Cells

International Journal of Photoenergy · 2014Read source

SCI

Improvement of metal and tissue adhesion on surface‐modified parylene C

Journal of Biomedical Materials Research Part A · 2008Read source

Ritual Use

From reference to practice

Aqua Aura Quartz in ritual practice

When needing to communicate difficult truths (ventral vagal activation for social engagement) Visual meditation . the iridescent surface provides a shifting focal point that supports open awareness After conflict . to re-engage the social engagement system When the person is already grounded but needs to "open upward"

Sacred Match

Sacred Match reaches for Aqua Aura Quartz when what you feel sounds like:

voice disappearing at the exact moment it needs reach throat flutter before public speaking wanting your words to travel farther than fear allows holding back a message because it feels too exposed sudden clarity that still will not cross your lips

Sacred Match listens to the body rather than to preference. It senses whether expression is blocked by confusion, by lack of signal strength, or by a throat channel that constricts under visibility. When that points to laryngeal sympathetic activation with underpowered transmission, Aqua Aura Quartz is the stone it offers. This is suppressed broadcast. The content is there. The body cannot yet send it. Aqua Aura is matched when the system needs a brighter output line and less fear about how far a truth might travel once released.

Voice disappearing -> performance-triggered inhibition -> seeking a stronger transmission channel Throat flutter -> anticipatory sympathetic charge -> seeking steadiness under visibility Words needing reach -> fear-limited expression -> seeking permission to project farther Holding back the message -> exposure defense -> seeking safety in being heard Clarity stuck behind the lips -> intact cognition, blocked output -> seeking conversion of signal into speech

Take Sacred Match

Pairings Recipe File

Stones and herbs that harmonize with Aqua Aura Quartz

Crystalis crystal and herb pairing recipe box
Pairings are treated like a recipe file: clear use, method, and safety.

Crystal Companion

Aqua Aura Quartz + Amethyst

Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.

Crystal Companion

Aqua Aura Quartz + Rhodonite

Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.

Crystal Companion

Aqua Aura Quartz + Clear Quartz

Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.

Crystal Companion

Aqua Aura Quartz + Black Tourmaline

Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.

Aquamarine The Broadcast Channel. Aqua aura quartz wants reach and transmission. Aquamarine supports clean breath, calmer pacing, and a more natural voice. Designed for teaching, presenting, singing, and saying the hard thing clearly. It is especially useful when nerves make the voice smaller than the actual message. Place aqua aura quartz at the throat and aquamarine on the upper chest.

Sodalite The Message Editor. Aqua aura quartz can amplify expression fast. Sodalite keeps the content coherent and grounded in actual thought. Useful for public speaking, pitch work, and emotionally charged conversations. Hold sodalite in the off hand and aqua aura quartz in the active hand while rehearsing.

Black Tourmaline The Signal Shield. Aqua aura quartz is bright, conductive, and easily overactivating for some people. Black tourmaline gives the body enough grounding to use that reach well. For sensitive communicators and crowded environments. Keep black tourmaline in the right pocket and aqua aura quartz at the throat.

Clear Quartz The Precision Beam. Aqua aura quartz extends voice and visibility. Clear quartz tightens focus so the message lands where intended. Best suited to intention-setting, ceremonial speaking, and work that needs exact articulation. Place clear quartz at the brow and aqua aura quartz at the throat.

Care & Cleansing

How to keep Aqua Aura Quartz in good condition

Water Safe?

Water safe

This stone is generally safe for short water contact, though polishing, fractures, and metal settings can still change how a specimen behaves.

Sunlight Safe?

Sunlight safe

Tolerates daylight; safe to charge or display in the sun.

Authenticity

What to check

Natural Aqua Aura Quartz should usually feel cooler than plastic or resin on first touch and warm more slowly in the hand.

Water: YES (brief immersion). Both gold and quartz are water-safe. However, prolonged soaking or hot water may eventually degrade the thin gold film over time. Not recommended for extended water immersion. The gold coating is bonded at the surface but is not as durable as natural mineral color. Sun: YES. Neither gold nor quartz degrades in sunlight. The blue color is structural (thin-film interference), not from organic dyes, so it will not fade in UV light.

Toxicity: - LOW RISK. Gold is one of the most chemically inert metals and is biocompatible. The gold film on Aqua Aura Quartz is extremely stable and does not release gold into solution under normal conditions. Quartz is also chemically inert. The main concern is that the gold film is very thin and can be abraded or chipped. Inhaling fine gold or quartz dust from cutting/grinding is hazardous (silicosis risk from quartz dust).

Handling: Handle freely. The gold coating can be scratched or chipped by harder materials or rough handling. Store separately from other crystals to preserve the coating.

Temperature

Natural Aqua Aura Quartz should usually feel cooler than plastic or resin on first touch and warm more slowly in the hand.

Scratch logic

Use 7 on the Mohs scale as the check, not internet myths. A real specimen should behave in line with the hardness listed above.

Surface and luster

Look for a vitreous (quartz) with metallic iridescent blue overlay from gold film surface quality rather than a painted or plastic shine.

Weight and density

The listed specific gravity is 2.65 (quartz); slightly higher with gold film (negligible mass contribution at nanometer thickness). If a specimen feels unusually light for its size, it may deserve a second look.

My Field Guide

Your private record and next steps

Crystalis field notebook with botanical sketches and rose quartz

Journal

Add this stone to your private collection, then log what happened when you worked with it.

Shared Notes

Read public practice logs and pattern notes from the Crystalis community.

Open shared notes

Sacred Match

Find crystal, herb, and intention pairings that resonate with your season.

Find your match

Shop Aqua Aura Quartz

Explore intentionally selected pieces for ritual, emotional repair, and self-love work.

Shop collection

Community field notes

No shared notes under Aqua Aura Quartz yet.

When members save a public field note for this stone, it will appear here.

Frequently Asked

Questions people ask about Aqua Aura Quartz

What is Aqua Aura Quartz?

Aqua aura quartz is a treated, enhanced material, not a natural mineral. The substrate is natural quartz (SiO2, a tectosilicate, Mohs 7, trigonal alpha-quartz, space group P3121), and the coating is elemental gold, with possible trace bonding at the Au-SiO2 interface. The gold film is far softer than the quartz beneath it (roughly Mohs 2.5) but is extremely thin, and it crystallizes in the isometric (face-centered cubic) system.

What is the Mohs hardness of Aqua Aura Quartz?

Aqua Aura Quartz has a Mohs hardness of 7 (quartz substrate); gold film is softer (~2.5) but extremely thin.

Can Aqua Aura Quartz go in water?

YES (brief immersion); Both gold and quartz are water-safe. However, prolonged soaking or hot water may eventually degrade the thin gold film over time. Not recommended for extended water immersion. The gold coating is bonded at the surface but is not as durable as natural mineral color.

Can Aqua Aura Quartz go in the sun?

YES, Neither gold nor quartz degrades in sunlight. The blue color is structural (thin-film interference), not from organic dyes, so it will not fade in UV light.

What crystal system is Aqua Aura Quartz?

Aqua Aura Quartz crystallizes in the Substrate: Trigonal (alpha-quartz; space group P3121); Gold coating: Isometric (face-centered cubic).

What is the chemical formula of Aqua Aura Quartz?

The chemical formula of Aqua Aura Quartz is Substrate: SiO2 (silicon dioxide); Coating: Au (gold, with possible trace bonding at the Au-SiO2 interface).

Where is Aqua Aura Quartz found?

The treatment is performed in laboratories/factories, not a geological process. Source quartz comes from: - Hot Springs, Arkansas, USA (common source of clear quartz points) - Minas Gerais, Brazil - Madagascar - Any locality producing transparent to translucent quartz crystal points.

Is Aqua Aura Quartz toxic?

- LOW RISK. Gold is one of the most chemically inert metals and is biocompatible. The gold film on Aqua Aura Quartz is extremely stable and does not release gold into solution under normal conditions. Quartz is also chemically inert.

Sources & Citations

Where this entry can be checked

Crystalis source notebook and citation desk

Back Matter

Readable for people. Structured for AI search.

Sources stay visible in the page so readers, search engines, and answer systems can follow the evidence trail.
  1. 01

    SCI

    Precipitous weakening of quartz at the <i>α</i> – <i>β</i> phase inversion

    Lawn, Brian, Marshall, David, Raj, Rishi, Hirth, Greg, Page, Trevor et al. (2020). Precipitous weakening of quartz at the <i>α</i> – <i>β</i> phase inversion. Journal of the American Ceramic Society. [SCI]DOI 10.1111/jace.17470
  2. 02

    SCI

    Piezoelectric Materials for High Temperature Sensors

    Zhang, Shujun, Yu, Fapeng. (2011). Piezoelectric Materials for High Temperature Sensors. Journal of the American Ceramic Society. [SCI]DOI 10.1111/j.1551-2916.2011.04792.x
  3. 03

    SCI

    Research and Development Aspects on Chemical Preparation Techniques of Photoanodes for Dye Sensitized Solar Cells

    Asim, Nilofar, Ahmadi, Shideh, Alghoul, M. A., Hammadi, F. Y., Saeedfar, Kasra et al. (2014). Research and Development Aspects on Chemical Preparation Techniques of Photoanodes for Dye Sensitized Solar Cells. International Journal of Photoenergy. [SCI]DOI 10.1155/2014/518156
  4. 04

    SCI

    Improvement of metal and tissue adhesion on surface‐modified parylene C

    Wahjudi, Paulin N., Oh, Jin H., Salman, Salam O., Seabold, Jason A., Rodger, Damien C. et al. (2008). Improvement of metal and tissue adhesion on surface‐modified parylene C. Journal of Biomedical Materials Research Part A. [SCI]DOI 10.1002/jbm.a.31929
  5. 05

    SCI

    A new paradigm for signal processing of Raman spectra using a smoothing free algorithm: Coupling continuous wavelet transform with signal removal method

    Kandjani, Ahmad Esmaielzadeh, Griffin, Matthew J., Ramanathan, Rajesh, Ippolito, Samuel J., Bhargava, Suresh K. et al. (2013). A new paradigm for signal processing of Raman spectra using a smoothing free algorithm: Coupling continuous wavelet transform with signal removal method. Journal of Raman Spectroscopy. [SCI]DOI 10.1002/jrs.4232
  6. 06

    SCI

    Nonlinear Mechanooptical Transmittance Controlled by a Rotating TiO<sub>2</sub> Thin Solid Film with Embedded Bimetallic Au-Pt Nanoparticles

    Piña-Díaz, A. J., Trejo-Valdez, M., Morales-Bonilla, S., Torres-San Miguel, C. R., Martínez-González, C. L. et al. (2017). Nonlinear Mechanooptical Transmittance Controlled by a Rotating TiO<sub>2</sub> Thin Solid Film with Embedded Bimetallic Au-Pt Nanoparticles. Journal of Nanomaterials. [SCI]DOI 10.1155/2017/2918509
  7. 07

    SCI

    Sealing Glass‐Ceramics with Near Linear Thermal Strain, Part I: Process Development and Phase Identification

    Dai, Steve, Rodriguez, Mark A., Griego, James J. M. (2016). Sealing Glass‐Ceramics with Near Linear Thermal Strain, Part I: Process Development and Phase Identification. Journal of the American Ceramic Society. [SCI]DOI 10.1111/jace.14364
  8. 08

    SCI

    Temperature Dependence of the Bragg Peak-Intensity Close to the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi mathvariant="bold-italic">α</mml:mi></mml:mrow></mml:math>-Incommensurate-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mrow><mml:mi mathvariant="bold-italic">β</mml:mi></mml:mrow></mml:math> Transition in Quartz

    Yurtseven, Hamit, Kaymazlar, Koray. (2014). Temperature Dependence of the Bragg Peak-Intensity Close to the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi mathvariant="bold-italic">α</mml:mi></mml:mrow></mml:math>-Incommensurate-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mrow><mml:mi mathvariant="bold-italic">β</mml:mi></mml:mrow></mml:math> Transition in Quartz. Journal of Solid State Physics. [SCI]DOI 10.1155/2014/538540
  9. 09

    SCI

    C<scp>RYSTAL14</scp>: A program for the<i>ab initio</i>investigation of crystalline solids

    Dovesi, Roberto, Orlando, Roberto, Erba, Alessandro, Zicovich‐Wilson, Claudio M., Civalleri, Bartolomeo et al. (2014). C<scp>RYSTAL14</scp>: A program for the<i>ab initio</i>investigation of crystalline solids. International Journal of Quantum Chemistry. [SCI]DOI 10.1002/qua.24658
  10. 10

    SCI

    Deformation history reconstruction using single quartz grain Raman microspectroscopy data

    Skultéti, Ágnes, Tóth, Tivadar M., Fintor, Krisztián, Schubert, Félix. (2014). Deformation history reconstruction using single quartz grain Raman microspectroscopy data. Journal of Raman Spectroscopy. [SCI]DOI 10.1002/jrs.4456
  11. 11

    SCI

    P‐Wave Velocities Across the <i>α</i> → <i>β</i> Quartz Transition at Lower Continental Crust Pressure and Temperature Conditions

    Moarefvand, Arefeh, Gasc, Julien, Deldicque, Damien, Labrousse, Loic, Schubnel, Alexandre. (2024). P‐Wave Velocities Across the <i>α</i> → <i>β</i> Quartz Transition at Lower Continental Crust Pressure and Temperature Conditions. Journal of Geophysical Research: Solid Earth. [SCI]DOI 10.1029/2023JB027850