{"product_id":"brazilian-black-riven-slate-hearth","title":"Brazilian Black Riven Slate Hearth","description":"\u003cp\u003eContainer-direct Brazilian black riven slate hearths, supplied by \u003cb\u003eBluesky Stone\u003c\/b\u003e from Milton Keynes and Colchester. Four stock sizes, two thicknesses, two grades — all from the same quarry, all held in stock.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRectangles, done properly, this week.\u003c\/strong\u003e 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.\u003c\/p\u003e\n\n\u003ch2\u003eStock sizes and weights\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e900 × 600\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e900 × 900\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1200 × 900\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e61 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1500 × 900\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e76 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1200 × 900\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e91 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1500 × 900\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e113 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll slabs are calibrated to ±1mm with clean \u003cb\u003e90° machine-sawn edges\u003c\/b\u003e. \u003cb\u003e30mm is made in 1200×900 and 1500×900 only.\u003c\/b\u003e Every slab is a two-person lift and is delivered kerbside on a pallet.\u003c\/p\u003e\n\n\u003ch2\u003eOn every slab\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003e14-Day Crack Guarantee.\u003c\/b\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eThe credit card test.\u003c\/b\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eContainer-direct pricing.\u003c\/b\u003e Brazilian slate bought by the container, not through a UK middleman.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eFree pre-dispatch photo\u003c\/b\u003e of your actual slab on every Premium order, and on any Standard order with a cutting or finishing service added.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eFree collection\u003c\/b\u003e from Milton Keynes (MK8 8DD), Colchester (CO6 2JX) or Ballymena, Northern Ireland (BT42 4HZ).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStandard or Premium — this is stone selection, not edges\u003c\/h2\u003e\n\u003cp\u003eBoth grades are the same stone, the same thickness and the same test results. The difference is how the slab is chosen.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eStandard Grade\u003c\/b\u003e — the raw character of natural stone, with visible variation in texture, tone and pattern.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003ePremium Grade\u003c\/b\u003e — hand-sorted for even tone, so the face reads as one consistent colour.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeither grade changes the edge finish. Edge work is a service, chosen separately below.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specification\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eSlip resistance:\u003c\/b\u003e PTV 62 dry \/ PTV 49 wet — low slip risk\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eFlexural strength:\u003c\/b\u003e 19.6 MPa after 48 freeze-thaw cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eWater absorption:\u003c\/b\u003e under 0.50% — high frost resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSurface:\u003c\/b\u003e subtle natural riven\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eEdge:\u003c\/b\u003e clean 90° machine-sawn as standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eColour:\u003c\/b\u003e graphite grey to black in its raw state. Sealing takes it to a noticeably deeper, darker tone.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSuitability:\u003c\/b\u003e designed for the weight and radiant heat of a wood-burning or multi-fuel stove. Not for direct flame contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow it arrives\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eUnsealed\u003c\/b\u003e — included. Ships from stock in 3–5 working days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eDeep Clean \u0026amp; Seal — £75.\u003c\/b\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eSignature — £125\u003c\/b\u003e (14 working days) or \u003cb\u003e£175 priority\u003c\/b\u003e (7 working days). Cut to your size, edges dressed and honed, deep cleaned and sealed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExpress delivery barely helps a Signature order — the time is in the workshop, not on the lorry. We would rather tell you that than take the extra carriage.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery and collection\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eCollection is free\u003c\/b\u003e from all three sites. Milton Keynes and Colchester are ready within 24 hours; Ballymena in 2–4 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eDelivery to England and Wales\u003c\/b\u003e is priced at checkout — no quote needed, charged per order rather than per slab.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eScotland, Northern Ireland and the Islands\u003c\/b\u003e — costs vary by postcode, so we quote individually. Call \u003cb\u003e01908 46 46 56\u003c\/b\u003e or email \u003cb\u003esales@blueskystone.com\u003c\/b\u003e.\u003c\/li\u003e\n  \u003cli\u003eDelivered kerbside by pallet via a nationwide carrier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuying by the crate?\u003c\/h2\u003e\n\u003cp\u003eFull 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 \u003ca href=\"\/products\/brazilian-black-riven-slate-hearth-full-crate\"\u003efull-crate page\u003c\/a\u003e for crate pricing, or open a trade account.\u003c\/p\u003e\n\n\u003ch2\u003eReturns\u003c\/h2\u003e\n\u003cp\u003e28 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. Bespoke Signature cuts cannot be returned.\u003c\/p\u003e\n","brand":"Bluesky Stone Direct","offers":[{"title":"900 × 600 \/ 20mm \/ Standard","offer_id":64280585798009,"sku":"SS-EB9060-S","price":28.0,"currency_code":"GBP","in_stock":true},{"title":"900 × 600 \/ 20mm \/ Premium","offer_id":64280585830777,"sku":"SS-EB9060-P","price":38.0,"currency_code":"GBP","in_stock":true},{"title":"900 × 900 \/ 20mm \/ Standard","offer_id":64280585863545,"sku":"SS-EB9090-S","price":71.15,"currency_code":"GBP","in_stock":true},{"title":"900 × 900 \/ 20mm \/ Premium","offer_id":64280585896313,"sku":"SS-EB9090-P","price":86.36,"currency_code":"GBP","in_stock":true},{"title":"1200 × 900 \/ 20mm \/ Standard","offer_id":64280585929081,"sku":"SS-EB12090-S","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"1200 × 900 \/ 20mm \/ Premium","offer_id":64280585961849,"sku":"SS-EB12090-P","price":125.0,"currency_code":"GBP","in_stock":true},{"title":"1200 × 900 \/ 30mm \/ Standard","offer_id":64280585994617,"sku":"SS-EB-1209030-S","price":140.0,"currency_code":"GBP","in_stock":true},{"title":"1200 × 900 \/ 30mm \/ Premium","offer_id":64280586027385,"sku":"SS-EB-1209030-P","price":170.0,"currency_code":"GBP","in_stock":true},{"title":"1500 × 900 \/ 20mm \/ Standard","offer_id":64280586060153,"sku":"SS-EB15090-S","price":135.0,"currency_code":"GBP","in_stock":true},{"title":"1500 × 900 \/ 20mm \/ Premium","offer_id":64280586092921,"sku":"SS-EB15090-P","price":165.0,"currency_code":"GBP","in_stock":true},{"title":"1500 × 900 \/ 30mm \/ Standard","offer_id":64280586125689,"sku":"SS-EB-1509030-S","price":160.0,"currency_code":"GBP","in_stock":true},{"title":"1500 × 900 \/ 30mm \/ Premium","offer_id":64280586158457,"sku":"SS-EB-1509030-P","price":190.0,"currency_code":"GBP","in_stock":true},{"title":"1500 × 900 \/ 30mm \/ Premium — Factory Dressed","offer_id":64495917465977,"sku":"SS-EB-1509030-P+","price":220.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0400\/9866\/0501\/files\/EB-15090_b53b1302-fc9b-4bc7-9e86-09deec6103dc.png?v=1787049092","url":"https:\/\/blueskystone.com\/products\/brazilian-black-riven-slate-hearth","provider":"Bluesky Stone","version":"1.0","type":"link"}