Wholesale Stone Slabs for Fabricators, Builders & Designers
StoneX USA is a slab distributor serving countertop fabricators, builders,
remodelers, designers and architects across Wisconsin and northern Illinois. Our warehouse at
1735 S 106th St in West Allis, WI holds the region’s largest working slab inventory —
engineered quartz, granite, quartzite, porcelain, marble, soapstone and onyx — available
to the trade on account terms.
Why Shops Buy From a Local Slab Warehouse
Buy by the slab, not by the container. That is the practical difference for
small and mid-size shops: one slab for one job, instead of committing to a container of a color
you may not move. See the actual material before you commit. Every slab on our
live inventory is physically on the racks, so you can confirm
the piece before you schedule a template. No long lead times. Material is
15 minutes off I-94, not six weeks out at a port. Jumbo sizes in stock in many
quartz designs, for islands and full-height backsplashes without seams.
What We Distribute
Seven material families, all in full slabs:
- Engineered quartz — 100+ colors, consistent
slab-to-slab pattern, non-porous, never needs sealing. Browse by color family:
white, black,
calacatta. - Granite — natural one-of-a-kind movement,
heat and UV tolerant, the outdoor-capable choice. - Quartzite — marble looks with
granite-level hardness; the upgrade clients ask for by name. - Porcelain — large format, scratch and
heat resistant, outdoor-rated. - Marble, soapstone and onyx for baths, fireplaces
and feature work.
How Trade Ordering Works
1) Shortlist material on the live inventory. 2) Visit the
West Allis warehouse — Monday to Friday
8:30–5:00, Saturday 8:30–2:00 — and tag the exact slabs for the job.
3) Collect or arrange delivery under your account terms. To open an account or ask about
terms, contact us or call
414-998-0404.
Serving the Milwaukee Metro and Beyond
Our trade customers work throughout southeastern Wisconsin — Milwaukee, West Allis,
Wauwatosa, Waukesha,
Brookfield, New Berlin,
Kenosha and Racine — and into northern
Illinois. Our partner directory lists vetted
fabrication shops across both states.
Wholesale Slab Questions
Does StoneX USA sell wholesale to the trade?
Yes. StoneX USA is a slab distributor serving countertop fabricators, builders, remodelers, designers and architects across Wisconsin and northern Illinois on trade terms, from its warehouse at 1735 S 106th St, West Allis, WI.
Do I need to be a fabricator to buy slabs?
No. Homeowners and designers are welcome to walk the racks and tag slabs; fabrication is handled by a shop. Trade accounts are for fabricators, builders and remodelers who buy regularly – those go through the Fabricator or Designer Program.
What is the minimum order for wholesale slabs?
We sell by the slab rather than by the container, which is the practical difference for small and mid-size shops: you can buy one slab for one job instead of committing to a full container of a color you may not move.
Which materials are available at wholesale?
The full inventory: engineered quartz (100+ colors), granite, quartzite, porcelain, marble, soapstone and onyx, in polished, honed and leathered finishes, including jumbo sizes in many quartz designs.
How do I check what is in stock before ordering?
The live inventory reads from our warehouse system, so every slab shown is physically on the racks in West Allis. Shortlist online, then confirm and tag the exact slabs on site.
Do you deliver, or is it pickup only?
Trade customers routinely collect from the West Allis warehouse; delivery arrangements are discussed per account. Contact us at 414-998-0404 to set up terms for your shop.
Trade Resources & Buying Guides
- How wholesale quartz slabs improve fabrication profit margins
- Quality control checklist for wholesale quartz countertops
- Best quartz countertops for builders and fabricators
- How to source premium quartz slabs at wholesale rates
- Wholesale quartzite slabs for commercial projects
- Bulk quartz slabs: MOQ and logistics guide
- Imported vs domestic stone: what US buyers should know
- Working with your stone supplier: what is negotiable
Regional Supply Guides
- Granite supply in Iowa
- Wholesale quartz in Texas
- Legacy Quartz in Indiana
- Quartz countertops in Illinois
- Growing a business with wholesale stone supply
- From quarry to countertop: how slabs are sourced
Collecting slabs? Warehouse location, drive times and hours.
What Actually Drives Countertop Cost
We do not publish slab prices — stone is priced by the individual slab, and a number on a web page would be misleading more often than helpful. What we can do is explain honestly what moves the number, so you can read any quote you receive.
What determines the cost of a stone countertop?
Four things, roughly in order of impact: the material and its rarity (a common granite and an exotic quartzite are not in the same range), slab size and how efficiently your layout nests into it, edge profile and cutout complexity, and fabrication and installation labour. Buying the slab and the fabrication separately - as you do with a slab supplier - makes each of those visible instead of bundled.
Why do quotes differ so much between shops?
Usually because they include different things. Some quotes bundle material, fabrication, edges, cutouts, tear-out and installation; others price them separately. Ask what is included, whether the slab is in stock or on order, and how remnants are handled.
Is a bigger slab more economical?
Often yes. Jumbo slabs reduce seams and can yield more usable countertop per slab, which matters on large islands. But if your layout does not need the extra size, standard slabs waste less.
How can I keep countertop costs predictable?
See the actual slab before you commit, confirm it is physically in stock (not on order), and get the fabricator to template from the real slab. The most common cost surprises come from material substitutions and layout changes after the fact, not from the slab price.
For a slab-level answer on any colour, contact us or call 414-998-0404 — we quote against the actual slab and your layout.
Slab Supply by Material
"Stone supplier" covers several different jobs depending on the material. Here is what actually matters in each family, and where to see what is on the racks right now.
Granite
Granite arrives as full slabs from quarry blocks, so no two are alike. A supplier's job here is selection depth: enough bundles of the same block that a shop can match a kitchen and an island out of one lot. Ask which colours are in multi-slab bundles before you commit a job to them. See the granite range.
Quartz
Engineered quartz is manufactured, so the supplier question is different: batch consistency and how quickly a colour can be re-ordered. We carry the Legacy Quartz line plus imported programmes, in both standard and jumbo formats. See the quartz range.
Quartzite
Quartzite behaves like granite but reads like marble, which makes it the material most often mis-sold. A real quartzite supplier will tell you which slabs are true quartzite and which are soft dolomitic stone that needs different handling. See the quartzite range.
Marble & Dolomite
Marble moves in smaller lots and sells fast, so availability is the whole game. We hold Carrara, Calacatta and dolomite in the warehouse rather than working container-to-order, which is why a shop can usually see the slab the same week. See the marble and dolomite range.
Porcelain & Sintered Stone
Large-format porcelain and sintered surfaces need different tooling and different handling than stone. Supply matters less than support here — slab size, thickness options and honest guidance on what your shop is equipped to cut. See the porcelain and sintered stone range.
What Shops Get From a Local Slab Supplier
Stock you can walk, not a catalogue
Every slab listed on this site is physically in the West Allis warehouse. There is no drop-ship layer between the rack and your job.
Slab-level selection
Shops tag the exact slabs they want. For anything with movement — quartzite, marble, exotic granite — that is the difference between a clean install and an argument with a homeowner.
One warehouse, five material families
Granite, quartz, quartzite, marble and porcelain under one roof means one pickup, one contact and one set of terms instead of five vendor relationships.
Built around fabricators
Most volume through this building goes to independent shops. Forklift loading, A-frame racking and trade accounts are the normal case here, not an exception.
Trade pricing, bundle availability and account terms are quoted directly rather than published — slab pricing moves with the lot and the block. Ask for a trade quote, or check the live slab inventory first.
Slabs on the Racks in West Allis
A sample of what trade buyers see when they walk the warehouse. Every material family below is held in stock rather than ordered per job.
Slabs vary within a bundle and photographs vary more than slabs do. Use these as a starting point, then check live inventory for what is physically on the racks today.
Sourcing Questions From Contractors and Specifiers
Where can contractors buy wholesale stone slabs in the US?
Contractors buy wholesale slabs from stone distributors that hold inventory in a warehouse, not from retail showrooms or fabrication shops. StoneX USA is one of them: a single warehouse at 1735 S 106th St, West Allis, WI 53214, holding granite, quartz, quartzite, marble and porcelain as full slabs. The practical test for any distributor is whether the slab is physically on site and whether you may tag the specific piece that will be cut for your job. If the answer is that material is ordered in per project, you are dealing with a broker rather than a stocking distributor, and your lead times will follow their container schedule.
Where can I find reliable suppliers for architectural stone?
Judge an architectural stone supplier on four things: whether they stock full slabs rather than samples, whether they can supply multiple slabs from the same block for one project, whether they will let you or your fabricator select the exact slab, and whether they publish a real physical address. Bundle depth is the one that decides large jobs — a run of cabinetry or a lobby cladding job needs slabs cut from the same lot, and no amount of colour matching fixes a supplier that has one slab left. Ask which colours are currently held in multi-slab bundles before you specify.
How can I secure the best pricing on bulk orders of stone slabs?
Bulk slab pricing is quoted per job rather than published, because it moves with the block, the lot and the quantity. Four things consistently improve the number you are quoted: buying by the bundle instead of the single slab, taking material that is already in the warehouse rather than requesting a special order, being flexible on which lot you accept when the colour allows it, and consolidating several jobs into one pickup. Trade accounts are handled directly — StoneX USA does not publish slab prices on the site, so ask for a quote against your actual slab count and material.
What are the best marble and granite suppliers in the US?
There is no single best supplier, because the answer depends on what you are buying and where you are. National distributors carry the widest catalogue but often sell through a branch network where the slab you saw online sits in another state. Regional stocking distributors carry less breadth but the slab is in the building. For work in southeast Wisconsin, StoneX USA holds the full range in West Allis and supplies independent fabrication shops directly. Judge any candidate on stock depth, whether you can see the actual slab, and how their bundles are documented.
Wholesale Quartz Slabs
Quartz is the largest single category moving through this warehouse, so it is worth saying plainly what wholesale quartz supply looks like here. Slabs are held in stock in both standard and jumbo format, in the Legacy Quartz line and imported programmes. A shop can buy a single slab or a full bundle, and because the material is engineered, a colour can usually be re-ordered later for a second phase that still matches.
Three things decide whether a quartz supplier is useful to a fabrication shop:
- Is the slab physically here? Everything listed on this site is on the racks in West Allis. There is no drop-ship layer between the rack and your job.
- Can the colour be re-ordered? Engineered quartz batches vary less than natural stone, but they do vary. Ask which programmes we can re-supply from the same run.
- Jumbo or standard? Jumbo slabs cut waste on large islands and waterfall ends. Not every colour comes in jumbo — worth checking before you quote.
Where We Ship
The warehouse is in West Allis, Wisconsin, in the Milwaukee metro. Most trade customers collect directly or take delivery within southeast Wisconsin and northern Illinois, and we supply shops across the upper Midwest. We are a single-location distributor, not a national branch network — if you are searching from Texas, Georgia or the west coast, a regional distributor closer to you will serve you better on freight and lead time. Saying that costs us nothing and saves you a phone call.
Wholesale slab pricing is quoted per job rather than published, because it moves with the lot and the quantity. Ask for a trade quote or check the live slab inventory first.
