01
Slabs
Large-format panels sawn from blocks.
On request
03 Stones
Armenian basalt
Dense, dark volcanic stone for restrained, hard-wearing surfaces.
Sourcing Partner quarries · Armenia
01 Overview
About basalt
Basalt is a dense, fine-grained volcanic rock formed from cooled lava. Its colour runs from dark grey to near black. The surface can show fine pores and small inclusions, as the basalt tiles pictured here do.
PetroStone supplies basalt through partner quarries in Armenia. Slabs, tiles, cut-to-size pieces and architectural elements made to drawings are quoted on request, and finishes are confirmed per enquiry.
Basalt is generally harder, denser and less absorbent than limestone or tuff, which is why it is a familiar choice for paving, steps and other exterior surfaces. The same hardness makes it slower to saw and finish. Performance still depends on the specific deposit, so ask for test data for your climate and use.
Dark does not always mean basalt. Black tuff is also dark, but it is a lighter, more porous volcanic ash rock that behaves differently. Name the stone in every enquiry.
02 Colours
Colours and variants
Basalt runs from dark grey to near black. Approve the tone on a sample before you order.
Tone
Dark grey to near black
Dense, dark basalt with fine pores and small inclusions.
03 Formats and finishes
Formats and finishes
The formats we can quote for basalt. Each one has its own page with what to specify. Finishes are confirmed for each enquiry: tell us the surface you need and we will say what we can supply.
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02
Tiles and strips
Modular tiles, cladding strips and French pattern sets.
On request -
03
Cut-to-size
Slab, tile and strip pieces cut to your drawings.
On request -
04
Architectural elements
Profiled, turned and carved pieces made to your drawings.
On request
Ask us about
These formats and finishes are not confirmed for basalt. Tell us what you need and we will say whether we can supply it.
Formats
Finishes
04 Applications
Typical applications
General guidance on where basalt is used. The final choice depends on test data for the specific stone, finish and site.
- 01 Facades Cladding, window surrounds and cornices for building exteriors.
- 02 Exterior paving Pavers, tiles and slabs for terraces, paths and plazas.
- 03 Urban infrastructure Plazas, street paving and public steps in hard-wearing stone.
- 04 Stairs Treads, risers, landings and balusters cut to stair drawings.
- 05 Landscaping Paving, steps, balustrades and garden elements.
05 Data and documents
Technical data and documents
Values appear here only when a test report for the stone we supply backs them. The documents we can send are listed with them.
No verified test values yet
Technical documentation is provided with quotations when available for the selected stone. List the tests your project requires in the enquiry, and we will tell you what is available.
What to ask for
Ask for results measured on the stone and finish you are considering. The standard tests, what each one measures and how to read a report are explained on the technical data page.
Documents
- Basalt technical data sheet On request
- Export packing specification On request
- Installation guidance On request
06 Export
Packing and export
Packing depends on the product: blocks, slabs, tiles and shaped pieces are protected and secured differently. We confirm the packing for each order.
Export packing uses ISPM-15 treated timber where the destination requires it.
07 FAQ
Questions about basalt
01 Where do your tuff and basalt come from?
Tuff and basalt are supplied through partner quarries in Armenia. Tell us the stone, tone, format and finish you need and we confirm what can be supplied. Name the stone in every enquiry: black tuff and basalt are both dark, but they are different stones.
02 Will my order match the approved sample exactly?
Natural stone varies in tone and pattern, between blocks and within a block, so a sample is a reference rather than an exact match. Agree how much variation is acceptable. For large areas, ask for material from the same lot and blend packs during installation. We confirm in the quotation how supply is prepared for your project.
03 What should I check before specifying stone outdoors?
Check the slip resistance of the finished surface, frost and de-icing salt exposure, water absorption, the thickness your fixing or bedding system needs, and tone consistency across the area. Performance depends on the specific deposit, the finish and the installation, so confirm test data for your climate and use.
04 Can you make pieces to our drawings?
Yes. Cut-to-size pieces and architectural elements are made to drawings: steps, sills, cornices, mouldings, balusters, capitals, columns, carved panels and basins. Travertine is a standard format; tuff and basalt are quoted on request. Send dimensioned drawings in PDF, DWG or DXF.
05 Can you provide technical data sheets and test reports?
Technical documentation is provided with quotations when available for the selected stone. If your project needs specific tests, such as water absorption, flexural strength or slip resistance, list them in the enquiry so we can tell you what is available.
Request for quotation
Tell us what you need.
Stone. Dimensions. Quantity. Destination.
Your request opens with basalt already selected. Add the format, finish, quantity and destination.
Or write to sales@petro-stone.am