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STONEPEDIA · QUARRY STORIES

Where stone is born.

Geology stories of the districts behind the world's best-known stones, a quick quiz, award-winning projects and four decades of stone in the kitchen — every fact with its source.

Quarry stories

Turn the globe and pick a marker, or choose a district from the list. 41 districts · 34 on the globe

Italy · Marble

Carrara / Apuan Alps

Tuscany (Carrara, Massa, Seravezza)

Rock
calcitic marble
How it formed
Jurassic limestone recrystallized during the Apennine orogeny; fine to medium grain.
Minerals
calcite, graphite/clay in the gray veins, iron oxides in the golden veins
Colors
white, light gray
Veining
fine, diffuse gray (Carrara); branching and bold (Calacatta); dark gray on a very white background (Statuario)
Well-known stones
Bianco Carrara · Calacatta Oro/Borghini/Vagli · Statuario · Arabescato · Bardiglio
Good to know
The names Calacatta and Statuario are borrowed by almost every engineered quartz in the world.
See this region in Stonepedia ↗

Which stone fits your home?

Five questions. The answer is a starting point to explore, not a recommendation for your project.

  1. Do you cook a lot and set hot pans on the countertop?
  2. Will there be direct sun or an outdoor area?
  3. Are you OK with patina (little marks) over time?
  4. Which look do you love?
  5. Budget?

Knowledge

Materials

Quartzite

A natural metamorphic rock formed from quartz-rich sandstone. True quartzite is hard (Mohs ~7) and resists acid and sun, but it varies from slab to slab and a lot of stone is sold under the wrong name.

Quick facts
Composition
Mainly crystalline quartz
Heat
High
Stains
Medium (porosity varies; seal according to testing)
Acids
High (lemon won't mark it if it is true quartzite)
UV / Sun
High (natural, no resin)
Care
Periodic sealing based on the water test
Best for
Anyone who wants the look of marble with more durability; outdoor areas

Source: Natural Stone Institute — Quartzite technical bulletin

Marble

Metamorphosed limestone (calcium carbonate). Beautiful and classic, but soft (Mohs ~3) and reactive to acid: lemon, vinegar and wine leave a dull mark (etching), even when sealed.

Quick facts
Composition
Calcite (CaCO₃)
Heat
Good
Stains
Low to medium (porous; seal it)
Acids
Low: etches with acids
UV / Sun
High
Care
Seal; clean with a pH-neutral product; embrace the patina
Best for
Bathrooms, fireplaces, and islands for those who accept patina; a honed finish disguises marks

Source: Natural Stone Institute — Stains and etching

Granite

Igneous rock with feldspar, quartz and mica. Very resistant to heat and scratches; much of it doesn't even need sealing, according to the Natural Stone Institute.

Quick facts
Composition
Feldspar, quartz (10–45% silica, according to OSHA), mica
Heat
High (avoid extreme localized heat)
Stains
High to medium (depends on the variety)
Acids
High
UV / Sun
High
Care
Water test; seal only if it absorbs
Best for
Heavy-use kitchens, barbecue areas, outdoor areas

Source: Natural Stone Institute — Sealing stone

Dolomite

A carbonate rock (sedimentary/metamorphic) harder than marble (Mohs 3.5–4). It still etches with strong acid, but more slowly. Often sold as 'soft quartzite' — it is not quartzite.

Quick facts
Composition
Dolomite CaMg(CO₃)₂
Heat
Good
Stains
Medium (seal it)
Acids
Medium: etches, more slowly than marble
UV / Sun
High
Care
Seal annually; a honed finish helps
Best for
The look of marble with a little more tolerance

Source: Slabwise — Dolomite ↗

Myth or fact

It depends

Is 'Carrara' quartz from India cheaper and more beige, and the one from China pricier and whiter?

We found no reliable source linking color to country. Whiteness comes from the purity of the crushed quartz, the pigments, the resin and each factory's quality control — there are good and bad factories in both countries. What is a fact: in the U.S., Chinese quartz pays duties of 295–337% (antidumping, 2019), while Indian quartz pays 2.67–5.15% + 1.57–2.34% (2020). That's why Chinese quartz became expensive and scarce on the American market and India became a major supplier. Ask for a sample from the actual lot and compare side by side.

Source: US Dept. of Commerce — Quartz from India and Türkiye ↗

True

Does quartzite always scratch glass?

True quartzite is harder than glass and scratches it; if the 'quartzite' doesn't scratch it, it is probably dolomite or marble. The Natural Stone Institute recommends the glass test and the acid test.

Source: Natural Stone Institute — Quartzite bulletin

Myth

Is granite radioactive and dangerous?

Granite contains natural traces of uranium and thorium, but the EPA considers radon from countertops to be well below the action level; the main source of radon is the soil.

Source: EPA — Granite and radiation ↗

True

Does lemon stain marble?

More precisely: it etches. The acid dissolves the calcite and leaves a dull mark (etch), even with sealer — sealer prevents stains, not etching.

Source: Natural Stone Institute — Stains

True

Does the silica in quartz cause silicosis in stone fabricators?

Cutting engineered quartz (≥93% silica) without water and ventilation creates dust that causes accelerated silicosis. OSHA and NIOSH issued a hazard alert; Australia banned the material on July 1, 2024. Once installed and intact, it poses no risk to the people using it.

Source: OSHA/NIOSH — Silica hazard alert ↗

True

Has any country banned engineered quartz?

Australia has banned the manufacture, supply and installation of engineered stone since July 1, 2024, because of silicosis. Countertops already installed do not need to be removed.

Source: Safe Work Australia — Engineered stone ban ↗

True

Is there a special rule in the U.S. for cutting quartz?

In December 2023, California adopted an emergency standard (Cal/OSHA 5204) requiring wet cutting, respirators and monitoring; the permanent standard was approved in December 2024.

Source: Natural Stone Institute — Cal/OSHA emergency standard FAQ

True

Why does quartz turn yellow near a window?

The resin (a small part of the slab) breaks down under UV and yellows irreversibly. Manufacturers exclude outdoor use from the warranty; there are dedicated lines for outdoor use.

Source: Slabwise — Outdoor quartz ↗

True

What is bookmatching?

Two consecutive slabs from the same block are opened like the pages of a book: the veining of one mirrors the other at the seam. It requires slabs in sequence — buy them together.

Source: Wikipedia — Bookmatching ↗

True

Is Taj Mahal a quartzite?

Taj Mahal is sold and recognized as a Brazilian quartzite (Mohs ~7) and should not etch with acids — it's worth doing the glass and lemon tests on the slab before you buy.

Source: Quartzite vs Quartz — Taj Mahal ↗

It depends

Are Calacatta, Carrara and Statuario the same stone?

All are marbles from the Carrara region (Italy), but they differ: Carrara has a light gray background and fine veining; Statuario, a whiter background and bold gray veining; Calacatta, wide, dramatic veins, often golden — and it is usually the most expensive.

Source: Remodelista — Differences ↗

Myth

Does all granite need to be sealed?

The Natural Stone Institute says most granite countertops don't need it; do the water test: if a drop darkens the stone within a few minutes, seal it.

Source: Natural Stone Institute — Sealing

Myth

Is dolomite a 'soft quartzite'?

Dolomite is a carbonate rock (Mohs 3.5–4) and etches with acid; quartzite is a silicate rock (Mohs ~7) and does not etch. They are different stones, with different prices and care.

Source: Slabwise — Dolomite ↗

True

Is Brazil the largest supplier of granite to the U.S.?

According to the USGS, from 2021 to 2024 Brazil accounted for 41% of the value of granite imported by the U.S., ahead of India (25%) and China (17%).

Source: USGS — Mineral Commodity Summaries 2026 ↗

It depends

Does the U.S. still quarry a lot of stone?

It does (2.3 million t in 2025, led by Texas, Wisconsin, Vermont, Indiana and Georgia), mostly limestone; but ~81% of the value consumed is imported.

Source: USGS — Mineral Commodity Summaries 2026 ↗

Myth

Is engineered quartz a natural stone?

It is a manufactured product: crushed quartz bound with resin and pigments. Quartzite is the natural rock.

Source: Wikipedia — Engineered stone ↗

Market & value

Freight and imports

The U.S. imports ~81% (by value) of the stone it consumes; granite comes mainly from Brazil (41%), India (25%) and China (17%). Ocean freight and exchange rates feed directly into the price.

Source: USGS — Mineral Commodity Summaries 2026 ↗

Antidumping duties

Since 2019, Chinese engineered quartz has paid antidumping duties of 295–337% and countervailing duties of 45–191% in the U.S. India and Türkiye have lower duties (since 2020), kept in place in the 2025 review.

Source: Federal Register — Order on quartz from China ↗

Glossary

Mohs scale

A relative hardness scale from 1 (talc) to 10 (diamond). Marble ~3, glass ~5.5, quartz 7.

Source: Wikipedia — Mohs ↗

Etching (etch)

A dull mark caused by acid dissolving the surface of calcareous stone; different from a stain, which is absorption.

Source: Natural Stone Institute — Stains

Sealer / impregnator

A product that reduces the absorption of liquids through the pores; it does not prevent acid etching.

Source: Natural Stone Institute — Sealing stone

Respirable crystalline silica

Fine quartz dust generated during cutting; it causes silicosis. Granite contains 10–45%, engineered quartz ≥93%.

Source: OSHA — Silica ↗

Dimension stone

Natural stone quarried in blocks and cut to shape for construction and decoration.

Source: USGS ↗

Radon

A natural radioactive gas that comes mainly from the soil; the EPA recommends testing the air in your home.

Source: EPA ↗

Award-winning stone

Projects recognized by the stone industry's awards, with the stones named in each source.

2025

Cathedral of Saint Thomas More

Arlington, VA · United States

Natural Stone Institute — Pinnacle Award · Sculpture/carving

Stones: Azul Macaubus quartzite; Bianco Carrara marble; Giallo Sienna marble; Verde Giada marble

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Montage Big Sky

Big Sky, MT · United States

Natural Stone Institute — Pinnacle Award · Commercial façade

Stones: Prairie Fieldstone Moss Rock sandstone

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Johns Hopkins University Adaptive Reuse Façade Renovation

Washington, DC · United States

Natural Stone Institute — Pinnacle Award · Commercial façade

Stones: Light Rose marble

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

The Frick Collection

New York, NY · United States

Natural Stone Institute — Pinnacle Award · Commercial interior

Stones: Botticino Classico marble; Breccia Aurora Blue marble; Rouge Griotte marble; Chiampo marble; Absolute Black granite

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Custom Marble Kitchen

Huntsville, AL · United States

Natural Stone Institute — Pinnacle Award · Kitchen/bath

Stones: Calacatta Macchia Vecchia Super Extra marble

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Saint Patrick Catholic Church

Washington, DC · United States

Natural Stone Institute — Pinnacle Award · Restoration

Stones: Bianco Carrara Michelangelo marble

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Saint James Catholic Church

Arlington, VA · United States

Natural Stone Institute — Pinnacle Award · Restoration

Stones: Botticino Classico marble; Rosso Levanto marble; Verde Issoire marble; Breccia Aurora marble

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2025

Lake View Residence

Cisco, TX · United States

Natural Stone Institute — Pinnacle Award · Residential

Stones: Hadrian limestone; Permian Sea Coral limestone

Source: Stone Ideas — Pinnacle Awards 2025 ↗

2024

Washington National Cathedral South Transept Grand Pinnacles

Washington, DC · United States

Natural Stone Institute — Pinnacle Award (Grande Pinnacle) · Restoration

Stones: Indiana limestone

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Boston Children's Hospital Wishingstone Garden

Boston, MA · United States

Natural Stone Institute — Pinnacle Award · Sculpture/carving

Stones: Charcoal Black granite; Echo Lake granite; Golden Brasil granite; Silver Cloud granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Saint Louis University High School Chapel of the Beloved Disciple

St. Louis, MO · United States

Natural Stone Institute — Pinnacle Award · Sculpture/carving

Stones: Bianco Carrara marble; Champlain Black marble; Paonazzo marble; Arabescato Corchia marble

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Smithsonian National Air and Space Museum

Washington, DC · United States

Natural Stone Institute — Pinnacle Award · Commercial façade

Stones: Lac Du Bonnet granite; Chelmsford Grey granite; Mesabi Black granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Rolex Boutique

Toronto, ON · Canada

Natural Stone Institute — Pinnacle Award · Commercial façade

Stones: Burgundy White limestone; Absolute Black granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Saint Nicholas Greek Orthodox Church and National Shrine

New York, NY · United States

Natural Stone Institute — Pinnacle Award · Commercial façade

Stones: Pentelikon marble

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Travis County Civil and Family Courts Facility

Austin, TX · United States

Natural Stone Institute — Pinnacle Award · Commercial interior

Stones: Calacatta Tucci marble; Italian basalt; Lueders Gray limestone; Silver travertine

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Guntersville Kitchen Remodel

Guntersville, AL · United States

Natural Stone Institute — Pinnacle Award · Kitchen/bath

Stones: Calacatta Macchia Vecchia Super Extra marble; Bronze Amani marble

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Crawford Memorial Park — "Comunidad"

Dallas, TX · United States

Natural Stone Institute — Pinnacle Award · Landscape/memorial

Stones: Kenoran Sage granite; Golden Brasil granite; Mesabi Black granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Reston Town Center Fountain Plaza Renovation

Reston, VA · United States

Natural Stone Institute — Pinnacle Award · Landscape/memorial

Stones: Jet Mist granite; Bethel White granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Saint Agnes Catholic Church

Arlington, VA · United States

Natural Stone Institute — Pinnacle Award · Restoration

Stones: Botticino Classico marble; Rosso Verona Magnaboschi marble; Calacatta Van Gogh marble; Giallo Siena marble

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Saint Jude Catholic Church

Peoria, IL · United States

Natural Stone Institute — Pinnacle Award · Restoration

Stones: Rouge Griotte marble; Verde Issorie marble; Fior di Pesco Light marble; Grigio Carnico marble

Source: Stone Ideas — Pinnacle Awards 2024 ↗

2024

Private Residence — Bachelor Gulch

Bachelor Gulch, CO · United States

Natural Stone Institute — Pinnacle Award · Residential

Stones: Gascogne Beige limestone; Selkirk granite

Source: Stone Ideas — Pinnacle Awards 2024 ↗

Decades of stone in the kitchen

Before 1985

1961

The Verona marble fair is born (today Marmomac)

It began in Sant'Ambrogio di Valpolicella as the Mostra del Marmo e delle Macchine and became the world's largest stone gathering.

Source: stoneupdate — Marmomac turns 60 ↗

The '90s · 1990–1999

Granite becomes a must-have

Defining looks: polished granite · solid surface · colored quartz

  • In the '90s, falling prices made granite affordable for the average home.

    Source: This Old House — 25 years of innovation: countertops ↗

  • 1999: the Marble Institute of America creates the Project Awards, which became the Pinnacle Award in 2002.

    Source: Natural Stone Institute — Pinnacle Awards archive and history

The 2000s · 2000–2009

Granite's peak, quartz arrives in the U.S.

Defining looks: granite (Brazil) · engineered quartz · polished finish

  • Granite takes off in the housing bubble of the early 2000s, showcased by builders in model kitchens; first browns and beiges with dark wood, then dark granites against white cabinets.

    Source: NKBA — Top 5 kitchen design trends, 2000–2009 ↗

  • 2002: one of the kitchen Pinnacle awards honors countertops in polished Verde Tunas and honed Sunset granite, with a curved seam — granite as a design piece.

    Source: Natural Stone Institute — 2002 Pinnacle Award

  • By the end of the decade, painted white cabinets push out heavily patterned granite and set the stage for the white era of the 2010s.

    Source: NKBA — Top 5 kitchen design trends, 2000–2009 ↗

The 2010s · 2010–2019

White with veining: quartz beats granite

Defining looks: 'Calacatta-look' quartz · ultracompact/sintered · white marble

The 2020s · 2020–2025

Quartzite, texture and the silica turning point

Defining looks: quartzite · honed/leathered finish · bold, colorful veining · monolithic kitchen

Year by year

  1. 1999

    MIA creates the Project Awards

    The origin of today's Natural Stone Institute Pinnacle Award.

    Source: Natural Stone Institute — Pinnacle Awards archive and history

  2. 2002

    Pinnacle: kitchen in Providence (RI)

    Polished Verde Tunas and honed Sunset granite with a curved seam on the countertop and floor.

    Source: Natural Stone Institute — 2002 Pinnacle Award

  3. 2004

    Residential Pinnacle: Cherry Hills (CO)

    Award of Excellence for a private residence.

    Source: Natural Stone Institute — 2004 Pinnacle Award

  4. 2016

    New OSHA silica standard

    A limit of 50 µg/m³ over 8 hours; water/ventilation controls and medical exams.

    Source: OSHA — National news release (2016-03-24) ↗

  5. 2018

    Quartz overtakes granite (Houzz)

    Granite has been declining for three years; quartz leads in cities and suburbs, granite still leads in rural areas.

    Source: Houzz — 2018 U.S. Kitchen Trends Study ↗

  6. 2019

    Antidumping duties on Chinese quartz

    Case filed by a U.S. quartz manufacturer in 2018; orders published on July 11, 2019.

    Source: Federal Register — Order on quartz from China ↗

  7. 2022

    Pinnacle Kitchen/Bath: Boyce Residence (AL)

    Calacatta Macchia Vecchia marble and Crema Champagne limestone; the jury highlighted the veining of the backsplash.

    Source: Natural Stone Institute — 2022 Pinnacle Award winners

  8. 2022

    Pinnacle Kitchen/Bath: Volpe Residence (SC)

    Award-winning kitchen in Bluffton.

    Source: Natural Stone Institute — 2022 Pinnacle Award winners

  9. 2023

    Pinnacle Kitchen/Bath: Super White Dolomite Kitchen (MA)

    Kitchen in Super White dolomite in Dover.

    Source: Natural Stone Institute — 2023 Pinnacle Award winners

  10. 2023

    California: emergency silica standard

    Approved on December 14, 2023, in effect December 29, 2023: wet cutting only on artificial stone.

    Source: Littler — Cal/OSHA emergency silica standard ↗

  11. 2024

    Australia bans engineered stone

    In effect since July 1, 2024 in all states; repair and removal of existing installations remain permitted.

    Source: Safe Work Australia — Engineered stone ban ↗

  12. 2024

    Pinnacle: Guntersville Kitchen Remodel

    Calacatta Macchia Vecchia Super Extra with Bronze Amani.

    Source: Stone Ideas — Pinnacle Awards 2024 ↗

  13. 2025

    Houzz 2025: veining and white

    41% choose a white countertop; 74% prefer a veined pattern; a straight edge leads (38%).

    Source: Houzz — 2025 U.S. Kitchen Trends Study ↗

  14. 2025

    Pinnacle: Custom Marble Kitchen

    Kitchen in Calacatta Macchia Vecchia Super Extra (Huntsville, AL).

    Source: Stone Ideas — Pinnacle Awards 2025 ↗

Facts checked against their sources on 2026-09-30. Geological reference regions. The exact origin of each slab requires the lot's documentation.

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