Rock Of Ages

What Rock Of Ages does

Rock of Ages is a 140-year-old integrated granite quarrier, manufacturer, and distributor headquartered in Graniteville, Vermont, operating as a wholly-owned subsidiary of Polycor Inc. The company owns and operates quarries across the United States (Vermont, Pennsylvania, Georgia) and Canada (Quebec, Ontario), producing proprietary stone varieties including CAMBRIAN BLACK® (the only solid black granite quarried in North America), BLUE GRAY® (the industry standard since 1885), and BETHEL WHITE®. Its core business spans five product lines: handcrafted cemetery monuments and headstones, private family mausoleums, columbaria (cremation niches), civic and war memorials, and industrial precision granite products (surface plates, machine bases, metrology components) serving aerospace, electronics, telecom, and lithography customers. Manufacturing is anchored in a 50,000+ square-foot precision facility with temperature-controlled areas and computer-controlled equipment capable of sub-micron geometries on items up to 50 feet long or 200 tons.

The company generates revenue through one-time purchases of custom and stock stone products, with no recurring component. Consumer-facing memorial sales flow through an authorized dealer network in the US and Canada, where dealers act as "memorial counselors" guiding customers through design, cemetery regulations, and installation. Large civic memorial and mausoleum projects involve direct consultation and quote-based pricing, while precision products are sold direct to enterprise OEM and steel customers via phone and quote forms. A defining differentiator is the SEALMARK™ perpetual warranty — the only warranty in the industry with no expiration date, backed by Wilmington Trust Company and transferable to heirs. Rock of Ages self-describes as "the largest producer of cemetery memorials in both the US and Canada" and "North America's premier granite quarrier and manufacturer." In January 2025, the company closed its long-running Visitors Center and ended public quarry tours, citing evolving site regulations and operational needs.

Name

Rock Of Ages

Legal name

Rock of Ages

Website

https://rockofages.com

Company type

Private

Founded year

1885

Operating status

Operating

Headcount range

251–500 employees

Short description

Rock Of Ages

Ownership category

akta.pro rank

Product category

Cemetery memorials and granite products

NAICS

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

SIC

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

akta.pro primary industry

Granite Quarrying & Dimension Stone Fabrication (IMAKAHAD)

Keywords

• Granite quarrying
• Cemetery monuments
• Mausoleum construction
• Precision granite products
• Memorial manufacturing

Headquarters

HQ city

Graniteville

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Cemetery Monuments and Headstones: One-time purchase of handcrafted cemetery monuments, headstones, and grave markers. Products range from standard in-stock options to fully custom designs with hand-carved statuary. Revenue is transaction-based with no recurring component for individual memorial purchases.
2. Mausoleums: Private family mausoleums ranging from single crypt above-ground chambers to stately family walk-in buildings. Highly customizable with pricing provided through quote requests. Represents larger transaction values than standard monuments.
3. Civic Memorials: Public monuments for communities, war memorials, and institutional memorials. Projects range from small plaques to vast granite walls and obelisks. Includes installations such as the National September 11 Memorial Museum's 9/11 Memorial Glade.
4. Columbaria: Cremation niches sold to cemeteries and municipal clients. Available in various shapes, sizes and designs (straight, curved, polygon, or custom). Cambridge cemeteries is noted as a repeat customer having purchased columbaria for six consecutive years.
5. Precision Granite Products: Industrial granite products for automation, aerospace, electronics, telecom, and lithography industries. Products include machine bases, surface plates, pickle and acid tanks, testing components, CMM subtables, and precision granite rails. OEM and steel industries served with domestic production.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Rock of Ages quarries, manufactures, and distributes granite and marble cemetery memorials and precision industrial stone products from company-owned North American quarries. Its portfolio spans handcrafted headstones and monuments, private mausoleums, columbaria for cremation niches, civic memorials for government and institutional clients, and precision granite components for industrial metrology and OEM applications. Distribution occurs through authorized memorial dealers for consumer sales and direct sales for civic and industrial accounts.

Product overview

Rock of Ages is a manufacturer of handcrafted granite and marble monuments, memorials, and precision industrial products. The product portfolio centers on five core offerings: Headstones/Monuments (cemetery memorials in various styles from standard grave markers to custom hand-carved designs), Mausoleums (private family structures for burial or cremation), Columbaria (cremation niches), Civic Memorials (public monuments including war memorials and community memorials), and Precision Products (industrial granite for aerospace, electronics, metrology, and manufacturing). The company operates its own North American quarries and manufacturing facilities in Vermont, supplying granite and marble materials including proprietary branded stones such as CAMBRIAN BLACK®, BLUE GRAY®, BETHEL WHITE®, and WHITE CHEROKEE™ marble. A distinguishing feature is the SEALMARK™ perpetual warranty, the only warranty in the industry with no expiration date, backed by Wilmington Trust Company.

Differentiator

Problem solved

Functional benefit

Brands

• SEALMARK™: The Rock of Ages quality certification mark that guarantees products against cracking, checking, and defects in perpetuity.
• Rock of Ages Precision Products

Products and services

• Headstones/Monuments Handcrafted cemetery monuments and headstones available in various styles including traditional upright, slant with base, cremation memorials, flat markers, slant markers, and bevel markers. Products range from standard in-stock grave markers to fully custom designs with hand-carved statuary, sold to individual families primarily through authorized dealer memorial counselors.
• Mausoleums Private family mausoleums for burial or cremation, ranging from single-crypt above-ground chambers to stately walk-in family estate mausoleums. Completely customizable with options for sculptured columns, personalized features, and solid granite construction with anchored and sealed structural joints, sold through direct quote-based engagement for families and estates.
• Columbaria Cremation niches available in various shapes, sizes and designs (straight, curved, polygon, or custom). Manufactured with aluminum body construction surrounded by memorial-grade granite and sealed with aluminum and granite doors for security and durability, sold to cemetery operators and municipal clients.
• Civic Memorials Public monuments and memorials including war memorials, community memorials, obelisks, walls of granite, and architectural features. Projects range from small plaques to vast granite structures and may include statues, flags, gardens, porticos, stone benches, fountains, or eternal flames, with direct enterprise engagement and quote-based pricing.
• Precision Products Industrial granite products including machine bases, surface plates, pickle and acid tanks, testing components, metrology tools, CMM subtables, isolation tables, and precision granite rails. Serves automation, aerospace, electronics, telecom, and lithography industries with products meeting ASME Standard B89-3-7 2013 and Federal Specification GGG-P-463c, sold directly to OEM and steel industry customers.

Quantifiable outcome

• Cemetery customer (City of Cambridge) has purchased columbarium annually for 6 consecutive years
• +2 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Polycor Inc.coreOthersRock of Ages is a subsidiary of Polycor Inc., a natural stone company. Rock of Ages website links to Polycor Inc. privacy policy and corporate information. Polycor owns multiple stone quarries and manufacturing operations across North America.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Dakota Granite Company: Operates quarries in South Dakota producing premium granites (Dakota Mahogany, American Black) used in cemetery memorials and architectural applications. Direct competitor in proprietary-stone quarrying and monument fabrication for the North American memorial market.
• Coldspring: US-based granite quarrier and dimensional stone fabricator offering monuments, mausoleums, architectural stone, and custom cemetery memorials. Closely comparable vertically integrated quarry-to-installation model serving the same cemetery and civic memorial markets as Rock of Ages.
• KEEN Engineering (Granite Devices): Manufacturer of precision granite products including surface plates, machine bases, and metrology components for industrial and metrology applications. Directly comparable to Rock of Ages' Precision Products division in product category and end customers.
• North Carolina Granite Corporation: Quarries and manufactures Mount Airy® white granite, a competing branded proprietary granite used in monuments and architectural stone. Comparable vertically integrated player with own-quarry supply and monument-grade finishing capabilities.

Others

• Martin Marietta Materials: Major US supplier of aggregates (crushed stone, sand, gravel) and heavy building materials. Comparable in stone quarrying infrastructure and end-market exposure to construction and infrastructure, though not a monument fabricator.
• Vulcan Materials Company: Largest US producer of construction aggregates including crushed stone, sand, and gravel. While focused on aggregate volumes rather than dimensional granite, overlaps in stone mining and quarrying operations, capital intensity, and exposure to construction-cycle demand.

Regional players

• Buechel Stone Corporation: US Midwest-based natural stone quarrier and fabricator producing dimensional stone for architectural, commercial, and residential applications. Comparable in proprietary-quarry model and stone fabrication, though geographically concentrated in Wisconsin rather than Vermont/Canada.

Broad incumbents

• Polycor Inc. Parent company of Rock of Ages and one of the largest natural stone manufacturers in North America, operating multiple quarries across granite, marble, and limestone. Directly comparable as the broader portfolio owner of identical stone categories, though operating across wider end markets.

Emerging players

• L.S. Starrett Company: Manufacturer of precision measuring tools, saw blades, and industrial products including granite surface plates. Overlaps with Rock of Ages' Precision Products division in metrology/industrial granite, though Starrett's portfolio is much broader.
• Elliott Stone Company: US dimensional limestone and stone fabricator serving architectural, monument, and construction markets. Comparable in stone fabrication and proprietary quarry operations, though primarily limestone-focused rather than granite.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/rockofagesgranite
• LinkedInlinkedin.com/company/45079

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Rock Of Ages