Boji Stone

Primary iron sulfide component: FeS2 (pyrite, isometric; marcasite, orthorhombic). Matrix: CaCO3 (calcite/chalk) with minor clay minerals and limonite (FeOOH) weathering rinds. · Mohs 6 · Pyrite Component Is Isometric (Cubic); Marcasite Component Is Orthorhombic. The Concretions Themselves Are Amorphous/Polycrystalline Aggregates With No Single Crystal System. · Root Chakra

The stone of boji stone: meaning, mineralogy, and somatic practice.

Protection & GroundingMind-Body ConnectionEmotional BalanceVitality & Desire

This page documents traditional and cultural uses of boji stone alongside emerging research on tactile grounding objects. Crystalis does not claim that boji stone treats, cures, or prevents any medical condition. For mental health concerns, consult a qualified professional.

Crystalis Editorial · 40+ Years · Herndon, VA · 9 peer-reviewed sources

Origins: USA (Kansas)

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Boji Stone

The Polarity Balancer

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Protocol

The Paired Stone Witness

Honor the paired stones you cannot touch.

3 min

1
Place the Boji Stones in a sealed glass display case or behind glass. Do NOT handle with bare hands — these iron sulfide concretions can decompose and release sulfuric compounds that irritate skin. Sit 2-3 feet away. Settle your posture. Let your breath slow.
2
Observe the rounded, dark brown to black forms. Notice the smooth and rough textures of the pair, the contrast between them. Let your eyes soften. Your body does not need to touch these stones to receive their signal — the visual field is enough.
3
With each exhale, release one thing — a thought, a tension, a worry. The stones hold their own boundaries. You hold yours. Continue breathing. Notice where the body softens first.
4
After 3 minutes: check in. Has the breath changed? Has the jaw released? That shift — however small — is the protocol complete. The pair witnessed. The body responded. No contact required.

tap to flip for protocol

Division can become habit. One hand reaches for one version of the self, the other for something opposite, and neither one trusts the bridge.

Boji stones are iron sulfide concretions, rounded nodules with different surface expressions that folklore later organized into paired use. Even before the story, the object already suggested duality in contact: rough and smooth, left and right, weight meeting weight.

Some balance comes back the moment both hands admit they are holding one life.

What Your Body Knows

Nervous system states

In the palms and lower abdomen, Boji stone is used as a weight-based cue for bilateral organization. Boji Stone is handled in body-based work through its physical properties before any symbolic layer is added. Color, density, transparency, crystal habit, or surface texture give the nervous system something concrete to orient around. That orientation can reduce diffuse scanning by narrowing attention to one believable signal.

A common presentation includes split attention between left and right, heavy legs with an agitated chest, and fidgeting that does not relieve pressure. In that state, the body is not asking for abstract meaning. It is asking for a stable sensory task. With Boji Stone, the task comes from the material itself: its weight. The hand tracks edges or mass, the eyes follow pattern or light, and breathing gradually takes its cue from that slower rhythm. Another presentation includes difficulty sensing the floor and fatigue after prolonged vigilance. Here the stone works by giving the system a finite object with measurable boundaries, which can interrupt looping appraisal and restore a sense of location.

The mechanism is modest but useful. Focused tactile and visual input recruits orienting responses, reduces unnecessary search behavior, and allows muscular guarding to ease by degrees instead of all at once. In practice, boji stone works most clearly with a state that needs one convincing point of contact before it can change shape.

sympathetic

- Active sympathetic hyperarousal (fight/flight)

Suggested Placement: - One in each palm (traditional paired use) for bilateral grounding - Soles of feet for downward grounding - Base of spine / sacrum area

Nervous system mapping based on polyvagal theory (Porges, S.W. The Polyvagal Theory. Norton, 2011).

The Earth Made This

Formation: How Boji Stone Becomes Boji Stone

Boji stones (a trademarked name) are iron sulfide concretions composed of pyrite and marcasite, found in a specific formation in Kansas. The concretions formed when iron sulfide minerals precipitated around nucleation points in marine sediments during the Cretaceous period. Two forms are recognized by collectors: smooth rounded specimens ("female") and rough, protruding-crystal specimens ("male"), though these distinctions are mineralogical variations in crystal habit rather than biological categories.

The concretions typically range from marble to golf-ball size. Similar iron sulfide concretions occur worldwide, but the trademarked Boji name applies specifically to Kansas material.

Material facts

What the stone is made of

Mineralogy: Trade name for iron sulfide concretions (pyrite/marcasite nodules). Composition: pyrite (FeS₂, cubic) and marcasite (FeS₂, orthorhombic) with minor chalcedony, calcite, and clay matrix. Crystal system: mixed. Mohs hardness: ~6 (pyrite component). Specific gravity: 3.5-4.5 (composite; pure pyrite is 5.0). Color: brown to dark brown, from iron oxide surface weathering. Habit: rounded to slightly irregular concretions, smooth ("female") or protruding-crystal ("male") surface textures. From the Smoky Hill Chalk Member, Kansas. Not a mineral species; a trade name (trademarked as "Boji Stone") for iron sulfide concretions.

Deeper geology

Inside marine sediment long after deposition, iron and sulfur can reorganize into dense sulfide nodules that grow around a quiet center. These concretions developed in marine sediment where reducing conditions allowed iron sulfides to precipitate around a nucleus, often with later weathering altering the exterior to brown oxides. The trade name refers to material collected in Kansas and commonly described as a combination of pyrite and marcasite, two FeS₂ polymorphs with cubic and orthorhombic internal ordering. The concretion itself is not a single crystal. It is a polycrystalline aggregate shaped by accretion, compaction, and replacement.

That distinction matters when the specimen is read correctly. Boji stones are geological objects formed by sedimentary chemistry, not a tidy mineral species with one crystal system and one textbook habit. Some show smoother rounded surfaces, others rough projections where crystal growth expressed itself unevenly through the rind. Collectors often name these forms as female and male, but the actual explanation sits in varying texture, oxidation, and exposure of sulfide surfaces. Because pyrite is denser than quartz and much heavier than most stones of similar size, the body recognizes the weight immediately.

Cretaceous sediment, sulfide nucleation, and later weathering gave these stones their blunt authority. They feel like paired functions rather than polished beauty. The closing somatic note follows that mood: balance becomes easier when the system stops treating its opposite tendencies as strangers and lets both weight and roughness share one hand.

The mineral data reinforces that formation story. Boji Stone carries the chemistry Primary iron sulfide component: FeS2 (pyrite, isometric; marcasite, orthorhombic). Matrix: CaCO3 (calcite/chalk) with minor clay minerals and limonite (FeOOH) weathering rinds., and the stated crystal system is Pyrite Component Is Isometric (Cubic); Marcasite Component Is Orthorhombic. The Concretions Themselves Are Amorphous/Polycrystalline Aggregates With No Single Crystal System.. Hardness around 6 and specific gravity of 4.8-5.0 (pure pyrite); overall concretions approximately 3.5-4.5 due to chalk matrix are not decorative catalog facts. They describe how tightly the structure holds together, how the crystal responds to abrasion, and how much weight the hand expects from a piece of that size. Luster, color, and origin also preserve clues to environment. Brown material from USA (Kansas) reaches the market with a visual identity shaped by local geology, not by a generic stone category.

A specimen therefore carries process in several layers at once: chemistry, symmetry, growth history, and later alteration or treatment where relevant. What emerges from that stack is a stone that can be read physically before any symbolic meaning is assigned.

Mineralogy

Mineral specs

Chemical Formula

Primary iron sulfide component: FeS2 (pyrite, isometric; marcasite, orthorhombic). Matrix: CaCO3 (calcite/chalk) with minor clay minerals and limonite (FeOOH) weathering rinds.

Crystal System

Pyrite Component Is Isometric (Cubic); Marcasite Component Is Orthorhombic. The Concretions Themselves Are Amorphous/Polycrystalline Aggregates With No Single Crystal System.

Mohs Hardness

Specific Gravity

4.8-5.0 (pure pyrite); overall concretions approximately 3.5-4.5 due to chalk matrix

Luster

Metallic to sub-metallic on fresh pyrite surfaces; earthy to dull on weathered surfaces

Color

Brown

Traditional Knowledge

Lore and culture around Boji Stone

Science grounds the page. Tradition, lore, and remembered use make it readable as lived knowledge.

Timeline: Late Cretaceous (~85 Ma): Formation within the Western Interior Seaway sediments Pre-contact era: Native American peoples of the Great Plains likely encountered these concretions in erosional exposures; specific ethnographic documentation is sparse 1970s-1980s: Karen Gillespie trademarked the name "Boji Stone" and popularized them in the metaphysical crystal market as paired "male/female" stones 1990s-present: Widely adopted in crystal healing communities; trademark has created legal distinctions between "Boji Stones" and generic "Kansas Pop Rocks"

Trade Name Origins: "Boji" was coined by Karen Gillespie as a proprietary trade name. The more descriptive term "Kansas Pop Rocks" refers to their geographic origin and the tendency of pyrite concretions to fracture or "pop" when heated. The scientific community refers to them simply as iron-sulfide concretions from the Niobrara Formation.

Cultural Traditions: No well-documented ancient ceremonial use specific to these concretions. Their metaphysical popularity is entirely modern (post-1970s). Some sellers draw loose parallels to Moqui Marbles, which have documented cultural significance to some Indigenous peoples of the Colorado Plateau, but this is a conflation of two different geological materials.

Unknown

Timeline

- Late Cretaceous (~85 Ma): Formation within the Western Interior Seaway sediments - Pre-contact era: Native American peoples of the Great Plains likely encountered these concretions in erosional exposures; specific ethnographic documentation is sparse - 1970s-1980s: Karen Gillespie trademarked the name "Boji Stone" and popularized them in the metaphysical crystal market as paired "male/female" stones - 1990s-present: Widely adopted in crystal healing communities; trademark has created legal distinctions between "Boji Stones" and generic "Kansas Pop Rocks"

Unknown

Trade Name Origins

"Boji" was coined by Karen Gillespie as a proprietary trade name. The more descriptive term "Kansas Pop Rocks" refers to their geographic origin and the tendency of pyrite concretions to fracture or "pop" when heated. The scientific community refers to them simply as iron-sulfide concretions from the Niobrara Formation.

Unknown

Cultural Traditions

No well-documented ancient ceremonial use specific to these concretions. Their metaphysical popularity is entirely modern (post-1970s). Some sellers draw loose parallels to Moqui Marbles, which have documented cultural significance to some Indigenous peoples of the Colorado Plateau, but this is a conflation of two different geological materials. ---

Sacred Match Notes

When this stone becomes the right door

Sacred Match prescribes Boji Stone when you report:

split attention between left and right

heavy legs with an agitated chest

fidgeting that does not relieve pressure

difficulty sensing the floor

fatigue after prolonged vigilance

Sacred Match prescribes through physiological diagnosis, not preference. It queries the nervous system: current sensation, protective mechanism, and the biological need masked by both. When that triangulation reveals a pattern answered by boji stone, the prescription follows the stone’s physical behavior. Its geology, texture, density, optical structure, and handling profile indicate whether the body needs ballast, clearer edges, reduced visual noise, or a more organized field of attention. The match is made when the material solves for the body’s immediate regulation problem better than a prettier or more famous alternative.

split attention between left and right -> body asking for orientation -> seeking a clear point of contact

heavy legs with an agitated chest -> protective tension rising -> seeking containment

fidgeting that does not relieve pressure -> signal overload in the tissues -> seeking organization

difficulty sensing the floor -> regulation failing at the threshold -> seeking a gentler entry

fatigue after prolonged vigilance -> action or rest cannot complete -> seeking coherence

3-Minute Reset

The Paired Stone Witness

Honor the paired stones you cannot touch.

3 min protocol

1
Place the Boji Stones in a sealed glass display case or behind glass. Do NOT handle with bare hands — these iron sulfide concretions can decompose and release sulfuric compounds that irritate skin. Sit 2-3 feet away. Settle your posture. Let your breath slow.
1 min
2
Observe the rounded, dark brown to black forms. Notice the smooth and rough textures of the pair, the contrast between them. Let your eyes soften. Your body does not need to touch these stones to receive their signal — the visual field is enough.
1 min
3
With each exhale, release one thing — a thought, a tension, a worry. The stones hold their own boundaries. You hold yours. Continue breathing. Notice where the body softens first.
1 min
4
After 3 minutes: check in. Has the breath changed? Has the jaw released? That shift — however small — is the protocol complete. The pair witnessed. The body responded. No contact required.
1 min

The #1 Question

Can Boji Stone go in water?

NO -- Do not immerse in water. Iron sulfides react with water and oxygen to produce iron hydroxide (rust) and sulfuric acid. Prolonged water contact will degrade the specimen and contaminate the water with dissolved iron and sulfate. Indirect water method only.

Mineral Distinction

What sets Boji Stone apart

Dealers routinely lean on folklore labels with Boji stone, and that invites confusion between trademarked Kansas concretions and ordinary pyrite nodules. The confirming step is surface habit and provenance. Sellers can lean on color, trade names, or locality mythology, but that one check separates the real material from the easy substitute. Boji Stone has its own physical signature in the hand and under magnification, whether that means unusual density, a true internal growth pattern, a natural host matrix, or evidence of locality and structure.

Fraud or simple sloppiness matters differently here than it would for a generic tumbled stone. Trademark claims and pairing folklore affect price, so Kansas locality and authentic iron sulfide concretion texture protect the purchase. A buyer paying for Boji Stone is paying for a specific geological story, not just a similar color. Without confirmed mineral identity, the buyer is purchasing a marketing name, not a geological specimen.

Care and Maintenance

How to care for Boji Stone

Water: NO . Do not immerse in water. Iron sulfides react with water and oxygen to produce iron hydroxide (rust) and sulfuric acid.

Prolonged water contact will degrade the specimen and contaminate the water with dissolved iron and sulfate. Indirect water method only. Sun: Generally stable in sunlight.

However, prolonged UV exposure may accelerate surface oxidation of pyrite to limonite. Best kept out of sustained direct sun to preserve metallic luster. Toxicity: - MODERATE CAUTION: Pyrite (FeS2) can produce sulfuric acid when exposed to moisture and air over time (acid generation through oxidative weathering).

This is the same process responsible for acid mine drainage. Prolonged water exposure can release dissolved iron and sulfate, and in some cases trace metals (Chen et al. , 2013, DOI: 10.

1111/1462-2920. 12114). Dust from cutting or grinding pyrite/marcasite is irritating to lungs.

Crystalline silica (if present in matrix) poses a respiratory hazard if inhaled as dust (Stacey et al. , 2021, DOI: 10. 1002/jrs.

6110). Marcasite is less chemically stable than pyrite and may decompose over time, producing sulfur odors and acidic surface residues. Handling: Wash hands after handling, particularly rough or freshly broken specimens.

The metallic sulfide dust can contain trace amounts of heavy metals. Do not use in gem elixirs or water infusions under any circumstances.

Crystal companions

What pairs well with Boji Stone

Hematite: Dense bilateral grounding. Boji stone already carries notable weight; hematite intensifies the sense of mass and lowers scattered attention into the legs. It is best when the body feels split between overdrive and collapse. Hold one stone in each palm while both feet stay flat on the floor.

Black Tourmaline: Boundary plus ballast. Tourmaline defines the perimeter and Boji stone adds inward compression. That sequence helps a practice feel contained rather than merely heavy. Place black tourmaline by the feet and Boji stone pair in the hands.

Smoky Quartz: Slow discharge after strain. Smoky quartz works well when the person has accumulated pressure and needs a downward route for it. Boji stone makes that route feel tactile and immediate. Set smoky quartz at the base of the spine and Boji stones at either side of the hips.

Red Jasper: Steady movement after immobilization. Red jasper adds warmth and continuity to Boji stone’s denser stop-start quality. The combination suits fatigue after prolonged vigilance. Carry red jasper in the left pocket and Boji stone in the right pocket.

Taken together, these combinations work best when the stones are kept in distinct roles instead of piled into one indiscriminate cluster. One sets the frame, one changes the tone, and one gives the body a placement cue it can actually follow.

In Practice

How Boji Stone is used

Polyvagal Framework: Boji Stones, as iron-sulfide concretions with notable heft and magnetic/electrical properties (pyrite is semiconducting), address the dorsal vagal (shutdown/freeze) state. Their density and weight provide strong proprioceptive grounding input. The tradition of using them in pairs (one in each hand) creates bilateral stimulation that can help re-engage the ventral vagal social engagement system from a collapsed dorsal vagal state.

When to Use: - Freeze/dissociation states where the person feels "unreal" or disconnected from body - Grounding after overwhelming emotional flooding - When needing to feel "held" or weighted (the density provides somatic anchoring) - For bilateral engagement (paired stones, one per hand)

When NOT to Use: - Active sympathetic hyperarousal (fight/flight). the stimulating electrical properties may intensify agitation - If the person is already over-grounded/rigid/constricted - Not suitable for highly anxious states where stillness is difficult

Suggested Placement: - One in each palm (traditional paired use) for bilateral grounding - Soles of feet for downward grounding - Base of spine / sacrum area

Temperature Properties: Iron-sulfide concretions feel cool to the touch due to high thermal conductivity of the metallic sulfide component. They warm relatively slowly against the body. The cooling sensation provides an additional sensory anchor.

Verification

Authenticity

Boji stones (trademarked name): iron sulfide concretions from Kansas. Some smooth, some textured with protruding pyrite/marcasite crystals. Specific gravity approximately 3.

5-4. 5. Metallic to sub-metallic luster on fresh surfaces.

The trade name is trademarked; similar concretions from other localities may be called by different names but are mineralogically equivalent.

Temperature

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

Scratch logic

Use 6 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 metallic to sub-metallic on fresh pyrite surfaces; earthy to dull on weathered surfaces surface quality rather than a painted or plastic shine.

Weight and density

The listed specific gravity is 4.8-5.0 (pure pyrite); overall concretions approximately 3.5-4.5 due to chalk matrix. If a specimen feels unusually light for its size, it may deserve a second look.

Geographic Origins

Where Boji Stone forms in the world

Smoky Hill Chalk, western Kansas, USA (type locality . Stanton County and surrounding areas in the Niobrara Formation) Note: "Boji Stone" is a trademarked name; similar iron-sulfide concretions occur in Cretaceous chalks worldwide but are not "Boji Stones" by trade definition Moqui Marbles (iron oxide concretions from Navajo Sandstone, Utah) are sometimes confused with Boji Stones but are geologically distinct . those are iron-oxide cemented sandstone concretions, not iron-sulfide concretions

Boji Stones are iron-sulfide concretions that formed within the Smoky Hill Chalk Member of the Niobrara Formation in western Kansas, a Late Cretaceous (approximately 87-82 million years ago) marine chalk deposited in the Western Interior Seaway. The Niobrara Formation represents a period of extensive pelagic carbonate deposition across the interior of North America, when warm, shallow seas covered much of the continent. Neonatal mosasaur fossils and other marine reptile remains recovered from these deposits confirm the fully marine, pelagic setting of this chalk unit (Field et al., 2015, DOI: 10.1111/pala.12165).

FAQ

Frequently asked

What is Boji Stone?

Boji Stone is classified as a Sulfide concretion -- composite of iron sulfide minerals (pyrite and marcasite) within a sedimentary carbite/chalk matrix. Not a single mineral species but a concretionary aggregate.. Chemical formula: Primary iron sulfide component: FeS2 (pyrite, isometric; marcasite, orthorhombic). Matrix: CaCO3 (calcite/chalk) with minor clay minerals and limonite (FeOOH) weathering rinds.. Mohs hardness: 6-6.5 (pyrite component); overall concretion approximately 5-6.5 depending on degree of weathering and matrix composition. Crystal system: Pyrite component is isometric (cubic); marcasite component is orthorhombic. The concretions themselves are amorphous/polycrystalline aggregates with no single crystal system..

What is the Mohs hardness of Boji Stone?

Boji Stone has a Mohs hardness of 6-6.5 (pyrite component); overall concretion approximately 5-6.5 depending on degree of weathering and matrix composition.

Can Boji Stone go in water?

Can Boji Stone go in the sun?

Generally stable in sunlight. However, prolonged UV exposure may accelerate surface oxidation of pyrite to limonite. Best kept out of sustained direct sun to preserve metallic luster.

What crystal system is Boji Stone?

Boji Stone crystallizes in the Pyrite component is isometric (cubic); marcasite component is orthorhombic. The concretions themselves are amorphous/polycrystalline aggregates with no single crystal system..

What is the chemical formula of Boji Stone?

The chemical formula of Boji Stone is Primary iron sulfide component: FeS2 (pyrite, isometric; marcasite, orthorhombic). Matrix: CaCO3 (calcite/chalk) with minor clay minerals and limonite (FeOOH) weathering rinds..

Where is Boji Stone found?

- Smoky Hill Chalk, western Kansas, USA (type locality -- Stanton County and surrounding areas in the Niobrara Formation) - Note: "Boji Stone" is a trademarked name; similar iron-sulfide concretions occur in Cretaceous chalks worldwide but are not "Boji Stones" by trade definition - Moqui Marbles (iron oxide concretions from Navajo Sandstone, Utah) are sometimes confused with Boji Stones but are geologically distinct -- those are iron-oxide cemented sandstone concretions, not iron-sulfide concretions ---

Is Boji Stone toxic?

- **MODERATE CAUTION:** Pyrite (FeS2) can produce sulfuric acid when exposed to moisture and air over time (acid generation through oxidative weathering). This is the same process responsible for acid mine drainage. Prolonged water exposure can release dissolved iron and sulfate, and in some cases trace metals (Chen et al., 2013, DOI: 10.1111/1462-2920.12114).

References

Sources and citations

Field, Daniel J., LeBlanc, Aaron, Gau, Adrienne, Behlke, Adam D. (2015). Pelagic neonatal fossils support viviparity and precocial life history of <scp>C</scp>retaceous mosasaurs. Palaeontology. [SCI]
DOI: 10.1111/pala.12165
Souza, Tamires P., van Tongeren, Martie, Monteiro, Inês. (2021). Respiratory health and silicosis in artisanal mine workers in southern Brazil. American Journal of Industrial Medicine. [SCI]
DOI: 10.1002/ajim.23242
Nourmohamadi, Hossein, Aghazadeh, Valeh, Esrafili, Mehdi D. (2019). A comparative DFT study of Fe <sup>3+</sup> and Fe <sup>2+</sup> ions adsorption on (100) and (110) surfaces of pyrite: An electrochemical point of view. Surface and Interface Analysis. [SCI]
DOI: 10.1002/sia.6728
BARGE, L. M., HAMMOND, D. E., CHAN, M. A., POTTER, S., PETRUSKA, J. et al. (2011). Precipitation patterns formed by self-organizing processes in porous media. Geofluids. [SCI]
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Abu‐Mahfouz, Israa S., Cartwright, Joe A., Powell, John H., Abu‐Mahfouz, Mohammad S., Podlaha, Olaf G. (2023). Diagenesis, compaction strain and deformation associated with chert and carbonate concretions in organic‐rich marl and phosphorite; Upper Cretaceous to Eocene, Jordan. Sedimentology. [SCI]
DOI: 10.1111/sed.13085
Wei, Hengye, Tang, Zhanwen, Qiu, Zhen, Yan, Detian, Bai, Maquzong. (2019). Formation of large carbonate concretions in black cherts in the Gufeng Formation (Guadalupian) at Enshi, South China. Geobiology. [SCI]
DOI: 10.1111/gbi.12362
MACLEAN, L. C. W., TYLISZCZAK, T., GILBERT, P. U. P. A., ZHOU, D., PRAY, T. J. et al. (2008). A high‐resolution chemical and structural study of framboidal pyrite formed within a low‐temperature bacterial biofilm. Geobiology. [SCI]
DOI: 10.1111/j.1472-4669.2008.00174.x
Chen, Lin‐xing, Li, Jin‐tian, Chen, Ya‐ting, Huang, Li‐nan, Hua, Zheng‐shuang et al. (2013). Shifts in microbial community composition and function in the acidification of a lead/zinc mine tailings. Environmental Microbiology. [SCI]
DOI: 10.1111/1462-2920.12114
Stacey, Peter, Hall, Samantha, Stagg, Stephen, Clegg, Francis, Sammon, Christopher. (2021). Raman spectroscopy and X‐ray diffraction responses when measuring health‐related micrometre and nanometre particle size fractions of crystalline quartz and the measurement of quartz in dust samples from the cutting and polishing of natural and artificial stones. Journal of Raman Spectroscopy. [SCI]
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