Stone Group International

What Stone Group International does

Stone Group International (legal name MARMOR SG Société Anonyme Processing of Marble and Granite) is a vertically integrated Greek natural stone company founded in 1981 and headquartered in Thessaloniki. It operates eight privately owned quarries across Greece — including Thassos, Drama, Veria, Kavala, and Crete — and six processing factories in Thessaloniki, Thassos, Drama, Veria, and Kavala, employing more than 550 staff across sales, marketing, IT, HR, logistics, procurement, production, and finance functions. Its portfolio includes marble slabs, tiles, mosaics, and blocks in multiple finishes, alongside proprietary Greek marble varieties such as Thassos Snow White, Pirgon, Veria Green, Volakas, and Ajax.

The company sells through a hybrid enterprise field-sales motion targeting architects, interior designers, hospitality and commercial developers, luxury residential developers, construction companies, and wholesalers, complemented by a direct-to-consumer e-commerce platform at stonegroup.gr and physical showroom or video-call consultations. Pricing is quote-based and project-specific, with multi-year contracts on large executive construction engagements. Products are deployed in flagship projects across 80+ countries including Dubai, the USA, South Korea, Monaco, Australia, and Malaysia, with named customers such as Four Seasons (The Surf Club, Florida) and Jade Signature (Miami).

Beyond extraction and processing, the company has invested in innovation through its Future Factory initiative, which includes an A.I. Automated Marble Sorting System using computer vision and machine learning to classify tiles by visual quality characteristics. It also offers value-added custom services — Dry Lay layout preview, Art Craft Atelier bespoke crafting, project development, and marketing support — to deepen engagement with enterprise buyers. The legal entity is a privately held Société Anonyme under Greek law, with no disclosed parent company, private equity backing, or external funding rounds in the available data.

Name

Stone Group International

Legal name

MARMOR SG Société Anonyme Processing of Marble and Granite

Website

https://stonegroup.gr

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

101–250 employees

Short description

Stone Group International is a vertically integrated Greek marble and natural stone company founded in 1981, operating eight privately owned quarries and six factories to supply slabs, tiles, mosaics, and blocks to enterprise architects, hospitality developers, and luxury residential clients across 80+ countries.

Ownership category

akta.pro rank

Product category

Natural Stone and Marble Building Materials

NAICS

Dimension Stone Mining and Quarrying (212311), Cut Stone and Stone Product Manufacturing (327991), Crushed and Broken Limestone Mining and Quarrying (212312)

SIC

Cut Stone & Stone Products (3281), Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Marble Quarrying & Dimension Stone Fabrication (IMAKAHAE)

akta.pro secondary industry

Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC)

Keywords

• Natural stone products
• Marble slabs tiles
• Quarrying operations
• Architectural stone supply
• Stone fabrication services

Headquarters

HQ city

Thessaloníki

HQ country

Greece

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Marble Product Sales: Sale of marble and natural stone products including slabs, tiles, mosaics, and blocks from proprietary quarries and exclusive distribution agreements.
2. Quarrying Operations: Revenue from extraction and processing of marble from 8 privately owned quarries across Greece, including Thassos island, Drama, Veria, Kavala, and Creta island.
3. Custom Services: Custom fabrication, dry lay services, art craft atelier work, and project-specific stone solutions for architectural projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Stone Group International quarries, processes, and globally distributes marble and natural stone products — including blocks, slabs, tiles, and mosaics — from 8 privately owned Greek quarries and 6 processing factories, supplying premium varieties such as Thassos Snow White, Pirgon, and Veria Green. It also delivers custom fabrication services (project execution, dry lay layout previews, and art craft atelier work) to enterprise construction, hospitality, and luxury residential customers in 80+ countries.

Product overview

Stone Group International is a vertically integrated natural stone and marble supplier offering a comprehensive portfolio of products and services. Their core product offerings include marble slabs, tiles, mosaics, and blocks in various finishes (polished, honed, brushed, leather, bush hammered, sand blasted). The company operates 8 privately owned quarries in Greece and 6 processing factories. Their marble portfolio includes premium Greek varieties such as Thassos Snow White (the world's whitest marble), Thassos Vein, Pirgon Alas, Pirgon Nivatus, Pirgon Mist, New Vox, Aella, Volakas Classic, Veria Green, Ajax, Fusion, Prima, and Pirgon Ebru Arabesque. Beyond raw materials, they provide custom services including Projects (for executive construction), Dry Lay (layout preview), Art Craft Atelier (custom crafting), and Marketing support. The company also invests in innovation through their Future Factory initiative, featuring an A.I. Automated Marble Sorting System that uses computer vision and machine learning to classify marble tiles and slabs. Products are supplied to projects in over 80 countries including Dubai, USA, South Korea, Monaco, Australia, and Malaysia.

Differentiator

Problem solved

Functional benefit

Products and services

• Marble Slabs Large-format marble slabs in various sizes and finishes suitable for countertops, walls, and architectural applications, including premium Greek varieties such as Thassos Snow White, Pirgon Alas, Pirgon Nivatus, Pirgon Mist, New Vox, Aella, Volakas Classic, Veria Green, Ajax, Fusion, Prima, and Pirgon Ebru Arabesque.
• Marble Tiles Marble tiles in various dimensions and finishes for flooring, walls, and decorative applications.
• Marble Mosaics Marble mosaic pieces and patterns for decorative architectural applications, including hexagonal, herringbone, and chevron arrangements.
• Marble Blocks Raw marble blocks extracted from the company's 8 privately owned quarries, available for further processing or as standalone products.
• Custom Project Services Custom project development services for executive construction projects, including design consultation, material selection, and technical specifications tailored to architect and developer requirements.
• Dry Lay Service Custom service that previews the marble layout prior to final installation, enabling customers to verify pattern, color, and vein matching before committing to project installation.
• Art Craft Atelier Artisanal custom marble crafting service producing bespoke architectural elements and decorative pieces for premium projects.
• Thassos Snow White Marble Premium white marble quarried from Thassos island, Greece, marketed as the whitest marble in the world with unique brightness and nearly crystalline surface clarity. Selected for the Four Seasons Surf Club, Miami.

Quantifiable outcome

• Nearly four decades of industry experience since 1981

Named customers3 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature1 record

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Temmer Marble: Turkish marble producer with owned quarries and block/slab exports worldwide — regional peer with comparable vertical integration and international distribution.
• Marcolini Marmi: Italian marble producer and exporter serving luxury construction with its own quarries and processing; comparable vertically integrated premium stone operation.
• Antolini Luigi & C. Italian family-owned marble and natural stone producer with proprietary quarries and a global distribution network serving architects and luxury projects — direct competitor in premium marble slabs and tiles.
• Polycor: North American vertically integrated natural stone company operating quarries and fabrication facilities serving architectural, commercial, and residential markets with marble, granite, and limestone.
• Levantina y Asociados: Spanish vertically integrated natural stone group operating its own quarries and processing plants, supplying marble, limestone, and other stone globally to construction and architectural projects — directly comparable quarry-to-customer model.
• MGT Stone Co. Iranian-Turkish marble and natural stone exporter with quarrying operations and global reach to architectural projects — direct competing supplier into the same hospitality and commercial segments.
• Margraf Industria Marmi Vicentini: Italian quarry-to-finished-product marble producer with global export reach into luxury construction projects — competes head-to-head in architectural marble supply.

Broad incumbents

• Vermont Quarries: Established North American marble producer (Danby) supplying architectural projects globally; broader incumbent focused on a flagship quarry vs. Stone Group's diversified Greek reserve base.
• Caesarstone: Engineered quartz surface manufacturer competing against natural marble in the premium countertop and cladding segment — closest cross-material substitute threat to Stone Group's end-use markets.
• Dekton / Cosentino: Global surface products giant producing sintered stone and engineered surfaces used in luxury kitchens, bathrooms, and facades — substitutes for natural marble in premium architectural applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/stonegroup_sgi
• TikToktiktok.com/@stonegroupinternational

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stone Group International