Stonetech

What Stonetech does

Stonetech (legal entity: Marmara Gonianaki Industrial and Commercial S.A. / MARMARA GONIANAKI A.B.E.E.) is a privately-held Greek family-owned natural stone and engineered surface company headquartered in Heraklion, Crete, with additional facilities at Ipato and a sales office in Athens. The company operates two proprietary marble quarries — Aliveri Grigio and Silver Cloud — granting exclusive access to specific Greek marble varieties, and layers this with exclusive Greek distribution rights for premium engineered surface brands including Neolith (TheSize), Cimstone, Quartzforms, and Quarella. Its product portfolio spans natural stones (marble, travertine, limestone, granite), sintered surfaces, and quartz surfaces, sold as raw slabs or finished for kitchens, bathrooms, flooring, facades, fireplaces, and pool installations.

Stonetech pursues a sales-led go-to-market targeting luxury hotel and resort groups (Four Seasons, Amanzoe, One&Only, JW Marriott, Rosewood, Sofitel) and ultra-high-net-worth residential clients across Europe, the Middle East, and select markets in the Americas, Russia, and Australia. Distribution combines company showrooms, a dedicated B2B wholesale portal at stonetechb2b.com, and direct field sales for enterprise hospitality accounts, supplemented by a specialized pool vertical under the Stonetech Pools sub-brand. Pricing is project-based and quote-driven, reflecting custom dimensions, stone selection, finish, and installation scope; no public price list exists.

The business model rests on vertically integrated operations from quarry extraction through fabrication, dry-lay pre-installation, and final install. Differentiators include proprietary quarry access, exclusive engineered brand partnerships, Natural Stone Institute membership, and a documented portfolio of branded luxury installations. EU ESPA co-funding references indicate public co-investment in capacity expansion, and recent operational moves include a new Ipato facility, a B2B portal launch, and the Stonetech Pools vertical. No external equity funding, acquisition history, or revenue disclosure is present in the source data.

Name

Stonetech

Legal name

MARMARA GONIANAKKI ANONYMOI VIOMICHANIKI KAI EMPORIKI ETAIREIA (MARMARA GONIANAKI A.B.E.E.)

Website

https://stonetech.gr

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

51–100 employees

Short description

Stonetech (Marmara Gonianaki S.A.) is a Greek family-owned company that quarries, fabricates, and installs natural marble and engineered stone surfaces for luxury hotels, resorts, and ultra-high-net-worth residential projects worldwide.

Ownership category

akta.pro rank

Product category

Natural Stone & Engineered Surfaces

NAICS

Cut Stone and Stone Product Manufacturing (327991), Dimension Stone Mining and Quarrying (212311)

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 industries

Manufactured/Engineered Stone & Agglomerates (Quartz, Terrazzo, Sintered Stone) (IMAKAHAG), Other Dimension Stone (Slate, Sandstone, Quartzite, Travertine) Quarrying & Fabrication (IMAKAHAF)

Keywords

• Natural stone supply
• Marble quarrying
• Engineered stone surfaces
• Stone fabrication services
• Luxury stone installation

Headquarters

HQ city

Heraklion

HQ country

Greece

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Natural Stone Sales (Wholesale & Export): Sale of natural stones including marble, travertine, limestone, and granite through wholesale, B2B, and export channels. The company operates a dedicated B2B portal (stonetechb2b.com) for wholesale buyers and architects, with dedicated export operations to international markets.
2. Custom Fabrication & Installation Services: Custom marble fabrication and installation services for luxury projects including kitchen countertops, bathroom vanities, flooring, wall cladding, facades, fireplace claddings, and pool surfaces. Services include measurement, custom cutting, and professional installation.
3. Engineered Surface Products: Distribution and fabrication of branded engineered stone surfaces including Neolith sintered surfaces, Cimstone quartz surfaces, and Quartzforms quartz surfaces.
4. Retail & Showroom Sales: Direct-to-consumer sales through company showrooms in Greece for residential customers and small-scale projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

Stonetech (legal entity Marmara Gonianaki S.A.) quarries, processes, fabricates, and installs natural stone — primarily Greek marble — sourced from its own proprietary quarries (Aliveri Grigio and Silver Cloud), and distributes branded engineered stone surfaces (Neolith sintered, Cimstone and Quartzforms quartz, Quarella composite). It supplies slabs and finished products for kitchen countertops, bathroom vanities, flooring, wall and facade cladding, fireplace surrounds, and luxury pool surfaces, with vertical integration from quarry to installation.

Product overview

Stonetech is a Greek industrial and commercial company (Marmara Gonianaki A.V.E.E.) specializing in natural stone and engineered surface materials. The product portfolio centers on three core offerings: (1) Natural Stones including proprietary marble from two company-owned exclusive quarries (Aliveri Grigio and Silver Cloud), plus a comprehensive Greek Marble Collection; (2) Neolith Sintered Surfaces distributed as a partner brand; and (3) Quartz Surfaces under the Quartzforms and Cimstone distributed brands. These materials are sold as raw slabs and finished products for architectural applications including kitchen countertops, bathroom surfaces and vanities, indoor/outdoor flooring, wall claddings and facades, fireplace surrounds, and luxury pool installations.

Differentiator

Problem solved

Functional benefit

Brands

• Stonetech Exclusive: Exclusive marble collection featuring proprietary stone varieties including Aliveri Grigio and Silver Cloud
• Stonetech Pools
• Stonetech B2B

Products and services

• Natural Stones (Marble, Travertine, Limestone, Granite) Natural stone materials including marble, travertine, limestone, and granite sourced from company-owned exclusive Greek quarries, supplied as slabs and finished products for architectural and interior applications.
• Neolith Sintered Surfaces Ultra-compact sintered stone surfaces distributed under partnership with TheSize, used for kitchen countertops, bathroom surfaces, flooring, and facades.
• Quartz Surfaces (Cimstone & Quartzforms) Quartz-based engineered stone surfaces distributed under the Cimstone and Quartzforms brands, suitable for kitchen countertops, bathroom applications, and interior architectural use.
• Stonetech Exclusive Marble Collection Proprietary marble collection exclusively sourced and processed by Stonetech from its owned quarries, marketed under the Stonetech Exclusive sub-brand.
• Greek Marble Collection Collection of Greek-origin marble varieties including white, semi-white, beige, cream, green, and colored marbles supplied for architectural applications.
• Marble for Pools (Stonetech Pools) Specialized marble products and pool surface solutions including pool tiles and marble copings designed for luxury swimming pool installations, marketed under the Stonetech Pools sub-brand.
• Aliveri Grigio Marble Grey marble extracted from Stonetech's owned Aliveri Grigio quarry, sold as slabs and finished products for interior and exterior architectural use.
• Silver Cloud Marble Premium grey-white marble extracted from Stonetech's owned Silver Cloud quarry, supplied as slabs and fabricated products for luxury projects.
• Custom Stone Fabrication & Installation Services Custom stone fabrication, measurement, cutting, dry lay preview, and professional installation services for luxury hotel, resort, residential, and commercial projects, including kitchen countertops, bathroom vanities, flooring, wall cladding, facades, fireplace cladding, and pool surfaces.

Quantifiable outcome

• Established luxury hotel project portfolio including major international brands such as Four Seasons, Aman, One&Only, JW Marriott, Rosewood

Named customers22 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Neolith (TheSize)coreChannel Partner/ Reseller/ DistributorStonetech serves as exclusive distributor of Neolith sintered stone surfaces in Greece. Neolith is a premium sintered stone brand used for kitchen countertops, bathroom surfaces, flooring, and facades. The partnership enables Stonetech to offer large-format, ultra-thin sintered stone panels alongside its natural marble portfolio.
• CimstonecoreChannel Partner/ Reseller/ DistributorExclusive distributor of Cimstone quartz surfaces in Greece. Cimstone offers quartz-based engineered stone slabs for kitchen countertops and other surfaces, complementing Stonetech's natural stone offerings with a maintenance-free engineered alternative.
• QuartzformscoreChannel Partner/ Reseller/ DistributorExclusive distributor of Quartzforms quartz surface products in Greece. Quartzforms is an Italian-engineered quartz brand providing premium quartz slabs for residential and commercial applications.
• QuarellaminorChannel Partner/ Reseller/ DistributorStonetech distributes Quarella quartz and composite surface products, expanding its engineered stone portfolio with an additional brand option for customers seeking specific quartz surface solutions.
• Natural Stone InstituteminorStrategic or Co-development PartnerIndustry membership organization for natural stone professionals. Stonetech's membership indicates adherence to industry standards and provides access to industry resources, training, and networking within the natural stone sector.

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Direct peers

• Quarella (Marmo Quarella / Quarella Group): Italian producer of engineered marble, quartz, and composite stone surfaces distributed internationally. Comparable to Stonetech as a partner brand within its own portfolio (Stonetech distributes Quarella in Greece) and as a competing engineered surface supplier to the same luxury kitchen and bath segment.
• Antolini Luigi & C. Italian family-owned marble and natural stone company with proprietary quarries and worldwide distribution of exclusive stone varieties. Directly comparable to Stonetech as a family-run Mediterranean marble specialist leveraging proprietary quarries and curated collections to serve luxury residential and hospitality projects globally.
• Levantina y Asociados: Spain's largest marble and natural stone producer with own quarries, fabrication facilities, and global distribution to construction and architecture. Directly comparable to Stonetech as a Mediterranean-based vertically integrated marble company with proprietary quarries serving international luxury projects.

Emerging players

• Cambria: US-based family-owned producer of engineered quartz and natural stone surfaces sold through exclusive showroom networks. Comparable as a premium engineered surface brand competing for the same luxury specification set and as a privately-held, family-controlled stone business model.
• Caesarstone: Israeli pioneer of engineered quartz surfaces, now a publicly listed global brand distributed through dealer networks. Comparable to Stonetech's engineered stone distribution business (Cimstone, Quartzforms) and competes for the same kitchen and bath specifications in luxury residential projects.

Broad incumbents

• Cosentino: Spanish global leader in engineered quartz (Silestone) and natural stone surfaces, distributing through exclusive regional partners. Cosentino is comparable to Stonetech as a vertically integrated surface supplier serving luxury hospitality and residential architects, and as a competing distributed brand (Dekton sintered surfaces competes with Stonetech's Neolith line).
• Polycor: North America's largest natural stone quarrier and fabricator, owning quarries of granite, marble, and limestone with full fabrication. Comparable to Stonetech as a vertically integrated natural stone producer combining quarry ownership with cut-to-size architectural fabrication for premium construction projects.
• Coldspring: US-based quarrier and fabricator of natural stone (granite, marble, limestone) with national fabrication capacity for commercial architecture. Comparable to Stonetech as a vertically integrated natural stone producer supplying commercial facades, interiors, and large hospitality projects.

Regional players

• Pokarna Limited: Indian producer and exporter of engineered quartz (Quantra) and natural granite with global distribution. Comparable to Stonetech as a stone surface supplier competing in international distribution channels and offering both natural and engineered product lines.
• Marmol Export: Spanish marble exporter with own quarries of Crema Marfil and other Mediterranean marbles, serving international wholesale and architectural markets. Comparable to Stonetech as a Mediterranean marble producer with quarry ownership and export-focused B2B distribution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/StonetechGroup?ref=br_tf
• LinkedInlinkedin.com/company/stonetechgroup
• Instagraminstagram.com/stonetech_group
• Xx.com/stonetechgr

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Stonetech