Brazilian Black Riven Slate Hearth
£95.00 inc. VAT
Crack Guarantee ⓘ
Free Photo Service ⓘ
Guaranteed Level Surface ⓘ
We cut riven, honed or brushed slate to your exact size, up to three matching pieces from one slab. From £153.
Delivered kerbside on a pallet — please arrange help for the day.
Provide your installer's details and our team will get in touch with them directly.
- ✓ Cracks within 14 days, we replace it free — single slabs Photograph it, send it, we send another — provided it was installed, and the crack reported, within 14 days of delivery. Cut pieces included. Full crates are not covered.
- ✓ A credit card slides across without catching Every slab is tested, whichever grade you choose. Your stove sits flat and does not rock.
- ✓ 28-day returns on stock sizes Unused, in its original packaging. You arrange and pay the return carriage — it is a palletised slab, so it is not cheap, and we would rather say that here. Cut-to-size pieces are made for you, so they can't come back — see Cut to Size.
- ✓ Container-direct, from our own yard No middleman and no showroom markup. You buy from the yard that imports it, at yard prices.
- + Three surfaces, not two Riven, honed and brushed — all from the same Brazilian quarry. Most suppliers stop at two.
- + You pick the grade Raw natural character, or hand-sorted for even tone. Your call, not ours — and you make it before you pay, not on delivery.
- + Sealed in our workshop, or not at all Deep Clean & Seal if you want it fitted-and-finished. Leave it off and oil it yourself — we don't mind which.
- + A photo of your actual slab Included with Premium grade, or with any finishing service. Not a stock image — the piece with your name on it.
We cut rectangles, squares and the two-piece T-set. If your opening needs a circle, a teardrop or a one-piece T, we're not your supplier — and we'll say so rather than waste your time.
Key Specifications
- Dimensions: 1200×900 · 900×600 · 900×900 · 1500×900 — 20mm & 30mm
- Material: Brazilian Black Riven Slate
- Primary use: Wood-burning stove hearths
- Guarantee: 14-Day Crack Guarantee
- Photo service: Free photo of your exact slab before dispatch
Overview
Container-direct Brazilian black riven slate hearths, supplied by Bluesky Stone from Milton Keynes and Colchester. Four stock sizes, two thicknesses, two grades — all from the same quarry, all held in stock.
Rectangles, done properly, this week. We cut rectangles, squares and the two-piece T-set. If your opening needs a circle, a teardrop or a one-piece T, we are not your supplier — and we would rather say so here than waste your time.
Stock sizes and weights
| Size | Thickness | Weight |
|---|---|---|
| 900 × 600 | 20mm | 30 kg |
| 900 × 900 | 20mm | 45 kg |
| 1200 × 900 | 20mm | 61 kg |
| 1500 × 900 | 20mm | 76 kg |
| 1200 × 900 | 30mm | 91 kg |
| 1500 × 900 | 30mm | 113 kg |
All slabs are calibrated to ±1mm with clean 90° machine-sawn edges. 30mm is made in 1200×900 and 1500×900 only. Every slab is a two-person lift and is delivered kerbside on a pallet.
On every slab
- 14-Day Crack Guarantee. We stand behind the durability of our stone. If your slab cracks after installation, we will replace it free of charge — provided the slab was installed and the crack reported within 14 days of delivery.
- The credit card test. Every slab must let a standard credit card slide across the riven surface without catching on a ridge. A hearth that rocks under a stove is the fault nobody checks for.
- Container-direct pricing. Brazilian slate bought by the container, not through a UK middleman.
- Free pre-dispatch photo of your actual slab on every Premium order, and on any Standard order with a cutting or finishing service added.
- Free collection from Milton Keynes (MK8 8DD) — booked at checkout, ready within 24 hours.
Standard or Premium — this is stone selection, not edges
Both grades are the same stone, the same thickness and the same test results. The difference is how the slab is chosen.
- Standard Grade — the raw character of natural stone, with visible variation in texture, tone and pattern.
- Premium Grade — hand-sorted for even tone, so the face reads as one consistent colour.
Neither grade changes the edge finish: both come with clean 90° machine-sawn edges.
Technical specification
- Slip resistance: PTV 62 dry / PTV 49 wet — low slip risk
- Flexural strength: 19.6 MPa after 48 freeze-thaw cycles
- Water absorption: under 0.50% — high frost resistance
- Surface: subtle natural riven
- Edge: clean 90° machine-sawn as standard
- Colour: graphite grey to black in its raw state. Sealing takes it to a noticeably deeper, darker tone.
- Suitability: designed for the weight and radiant heat of a wood-burning or multi-fuel stove. Not for direct flame contact.
How it arrives
- Unsealed — included. Ships from stock in 3–5 working days.
- Deep Clean & Seal — £75. Deep-cleaned to remove quarry dust, then two coats of Stovax Dressing Oil. This is what takes the stone from grey to black. 3–5 working days.
Need a size we don't stock? Cut to Size cuts up to three matching pieces from one slab, from £153 including the slab. Standard 14 working days or Priority 7.
Delivery and collection
- Collection from Milton Keynes (MK8 8DD) is booked at checkout, ready within 24 hours.
- Collection from Colchester (CO6 2JX) is arranged by phone — £25 handling per order, not per slab. Call 01908 46 46 56.
- Delivery to England and Wales is priced at checkout — no quote needed, charged per order rather than per slab.
- Scotland, Northern Ireland and the Islands — costs vary by postcode, so we quote individually. Call 01908 46 46 56 or email sales@blueskystone.com.
- Delivered kerbside by pallet via a nationwide carrier.
Buying by the crate?
Full crates carry a lower per-slab rate and ship free to England and Wales. Crate quantities vary by size — 30 slabs for 900×600, 15 for 900×900 and 1200×900, 12 for 1500×900, 10 for 30mm. See the full-crate page for crate pricing, or open a trade account.
Returns
28 days on stock sizes. You arrange and pay return carriage — worth knowing up front, because this is a pallet item and that is not a small cost. Cut-to-size pieces are made for you, so they cannot be returned.