Brazilian black riven slate hearth slab, calibrated flat with 90 degree machine-sawn edges, natural cleft surface

Slate Hearth, Cut to Your Size

Enter your cutting size inc. VAT

★★★★★ 4.84/5 · 686 reviews✓ Slab in stock
Crack Guarantee ⓘ
If a cut piece cracks within 14 days of delivery, provided it was installed in that window, we replace it free.
Free Photo Service ⓘ
Every cut order includes a photo of the actual slab your pieces come from, before it goes on the saw.
Guaranteed Level Surface ⓘ
A standard credit card slides smoothly across the surface without catching.

Measure the opening, not the stove. Pieces from one slab match each other.

Length × width, in millimetres

Cut, edges dressed, cleaned and sealed in our Milton Keynes workshop. One charge covers up to three pieces.

Not sure which stone is right? Order a sample first ➔

Cut work can't come back, so please measure twice. Pallet orders arrive kerbside — heavy pieces are a two-person lift.

Provide your installer's details and our team will get in touch with them directly.

On cut-to-size work
  • ✓ A photo of the slab yours comes from Taken before it goes on the saw — the piece with your name on it, not a stock image. A courtesy, not a gate: we don't hold the saw waiting for a reply.
  • ✓ Crack guarantee covers cut pieces Cracks within 14 days of delivery, provided it was installed in that window — we replace it free.
  • ✓ Matched pieces Every piece comes off the same slab, so a chamber and front hearth match each other.
  • ✓ Container-direct, from our own yard No middleman and no showroom markup. You buy from the yard that imports it, at yard prices.

We cut rectangles and squares. If your opening needs a circle, a teardrop or a curve, we're not your supplier — and we'll say so rather than waste your time.

Key Specifications

  • Material: Brazilian black slate
  • Finishes: Riven · Honed · Brushed
  • Thickness: 20mm or 30mm
  • Largest piece: 1500 × 900mm or 1200 × 1200mm
  • Smallest side: 50mm
  • Saw cut: about 10mm lost per pass
  • Pieces per order: up to 3, from one slab
  • Cut at: Milton Keynes workshop
Frequently Asked Questions
Why does a smaller piece cost the same as a larger one?
You pay for the slab your pieces are cut from. Once it goes on the saw it's committed to your order.
Can I return a cut piece?
No — it's made to your sizes, so please check your measurements, or order a sample first.
What size should I give you?
The finished size you want to see, in millimetres. Measure the opening, not the stove, and check your stove maker's minimum hearth size.
Can I collect?
Yes, free from Milton Keynes. We email you the day your pieces are ready.