Company lists · Data refreshed September 2026
Top 15 Quartz mining companies based in Brazil
RevenueBase identified 56 quartz mining companies headquartered in Brazil as of September 2026 and tracks 918 professional contacts across them, including 102 with verified work emails. Cachoeiro De Itapemirim is the largest hub.
This list covers quartz mining companies headquartered in Brazil, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 15 largest quartz mining companies based in Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 120 contacts → | ||||
Indirect evidence “With three decades of experience, GSM Group is a global leader in quality and innovation in the ornamental stone market.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 99 contacts → | ||||
Indirect evidence “Granos is a second-generation, family-owned natural stone company with almost 40 years of expertise and one of Brazil’s largest processing operations in the North and Northeast…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 72 contacts → | ||||
Indirect evidence “Fundada em 2001, a Toledo Mineração é uma empresa que se destaca na produção e comercialização de rochas ornamentais.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 66 contacts → | ||||
Indirect evidence “The mineral wealth and geographical reality of the Espírito Santo led to the emergence of the industries of extraction and processing of ornamental stones in the southern state of…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 48 contacts → | ||||
Partial evidence “Starting almost 40 years ago with only one quarry, Gramil has rapidly become a leading company in the stone industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 36 contacts → | ||||
Indirect evidence “Com 40 anos de experiência, o Marcel Group é referência nacional na extração, beneficiamento e comercialização de rochas ornamentais.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 26 contacts → | ||||
Partial evidence “No ano de 1995 a Quartzblue iniciou sua história na mineração de rochas ornamentais fornecendo alguns dos materiais mais conhecidos no setor incluindo o Crema Bordeaux, Giallita…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 20 contacts → | ||||
Partial evidence “Established in 1988 in Medina, State of Minas Gerais, Brazil, Gransena is a family-owned business operating in the granite and quartzite industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 contacts → | ||||
Indirect evidence “Fundada em 2004 por Alexandre e Edvaldo Magnago, a Magnitos se dedica à extração e beneficiamento de rochas naturais com excelência.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Partial evidence “Founded in 1958, Granex is specialized in mineral extraction and industrialization of a variety of granite, marble and quartzite products.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Partial evidence “Quartzito Mont Blanc em Chapas Do Brasil para o mundo Original by Willcomex +55 28 Venha conhecer o nosso showroom!” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Indirect evidence “A Mineração Serrana está localizada na Região do Seridó, no estado do Rio Grande do Norte.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 contacts → | ||||
Partial evidence “Nascida em 1º de outubro de 2007, a Minas Stones Mineração é uma empresa privada que figura entre as maiores mineradoras de quartzo de alta pureza do país, sendo uma empresa jovem…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2 contacts → | ||||
Strong evidence “Company 50 years - Tradition and recognition through the quality of granites, Mining Brandão has 13 own quarries of exclusive materials, and partnerships with other reserves.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: quartz mining companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names quartz mining companies.
- Partial evidence
- Its own public description names part of quartz mining companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name quartz mining companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 15 of 56 quartz mining companies based in Brazil
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Quartz mining companies based in Brazil at a glance
As of Sep 17, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 56 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among quartz mining companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Brazil whose own description of what they do matches “quartz mining companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names quartz mining companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among quartz mining companies, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 102 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names quartz mining companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many quartz mining companies are there based in Brazil?
RevenueBase identified 56 quartz mining companies headquartered in Brazil as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
GSM Group, headquartered in Vitoria, tops this list with the largest team on record.
Which city has the most quartz mining companies?
Cachoeiro De Itapemirim leads with 12 headquartered companies, followed by Pequi (2) and Rio De Janeiro (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 102 verified decision-maker contacts tracked across these 56 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.