Riven Black Limestone Hearth – Standard Rectangle Cut to Size
Riven Black Limestone Hearth – Standard Rectangle Cut to Size - 30mm / Up to - 150cm × 100cm - (XL) is backordered and will ship as soon as it is back in stock.
Express Black Limestone Hearths
These low-cost Express Black Limestone hearths are ideal for when you need a natural stone hearth in a hurry. Made from riven black limestone and supplied with in straightforward square or rectangular cut, they offer an affordable way to achieve a perfect low cost hearth with a fast turnaround. Express hearths are typically delivered in around 3 working days, making them perfect for last-minute projects or urgent installations.
Each hearth is cut to your requested size with clean sawn edges, ready for you to trim, seal or finish on site if needed or to be installed as it is. The natural surface gives a beautiful appearance that works well with both traditional and contemporary fireplace designs.
For the best more understanding of the stone’s natural characteristics and performance, please refer to the Specification tab where all key technical details and natural features are clearly listed.
Easy Ordering
- ✓ Select your preferred thickness
- ✓ Choose the base size closest to your required dimensions from the dropdown
- ✓ Enter your cut-to-size measurements — we’ll handle the rest
Key Features
- ✓ Square or rectangular only for fast, efficient processing
- ✓ Precision cut to your requested size
- ✓ Clean sawn edges – supplied unsealed
- ✓ Fast 3-day delivery available across the UK
- ✓ No hidden costs or unnecessary delays
- ✓ Ideal for on-site trimming or DIY fitting
If you require a more complex shape, angled cuts or detailed edge profiles, please take a look at our Bespoke Cut-to-Size Limestone hearth option.
| Product Specifications | |
|---|---|
| General | |
| Product Name | Kota Black Limestone – Hearth Grade |
| Material Type | Natural limestone |
| Category | Fire hearth slab / fireplace stone |
| Country of Origin | India |
| Dimensional Tolerance | All dimensions are cut to size with a manufacturing tolerance of ±5 mm. |
| Thickness Options | 30 mm and 50 mm |
| Colour Description | Charcoal to black with natural tonal movement |
| Surface Finish | Textured natural finish with orange peel texture and occasional light riven features |
| Natural Variation | Medium variation in tone, shading and texture |
| Edge Finishing Notes | All edges are precision machine cut and then hand-sanded if needed. Due to the natural structure of limestone, small sanding marks, slight tonal variations along the edges and occasional tiny micro-chips may be visible. |
| Weight | Approx. 80–135 kg per m² depending on thickness |
| Density | Approx. 2,650 kg per m³ |
| Technical Characteristics | |
| Heat Absorption / Retention | High thermal mass, excellent heat absorption and steady heat dispersal |
| Maximum Temperature Resistance | Typically performs safely up to approx. 300–400 °C before risk of thermal shock. Hearth must not be in direct contact with an open flame. |
| Compressive Strength | Approx. 80–120 MPa |
| Flexural Strength | Approx. 8–12 MPa |
| Porosity | Medium |
| Water Absorption | Approx. 1–2% |
| Thermal Conductivity | Approx. 2.5–3.0 W/mK |
| Chemical Sensitivity | Sensitive to any acid |
| Stain Resistance | Moderate, improved with suitable sealing |
| Salt Sensitivity | Slight, as expected with natural limestone |
| Natural Characteristics of Limestone | |
| General Nature of the Stone | Kota Black Limestone is a natural stone formed over millions of years. Natural variations and features are part of its geological make up and cannot be avoided or deemed as faults. These include tonal changes, mineral markings and texture differences, all of which give the hearth its unique and authentic character. |
| Pyrite / Fools Gold | Pyrite is a natural iron sulphide mineral that can appear as small metallic gold or bronze coloured flecks in the stone. It occurs naturally within black limestone. We carefully select and cut material to reduce visible pyrite, but it is not always possible to avoid completely. In some cases pyrite may be hidden inside the stone and only becomes visible once the slab is cut to size, often as small spots on the edges. This cannot be detected before cutting and is not considered a defect. |
| Fine Quartz Lines | Fine quartz lines are narrow white mineral lines that form when silica rich minerals fill small natural fractures in the stone. They may appear as thin pale lines or streaks across the surface. We always aim to minimise prominent quartz lines, but some are unavoidable. They are sound, stable and part of the natural structure of the limestone. |
| Surface Rings | Surface rings are subtle circular or halo like markings created by gas bubbles during the hardening of the stone as it formed. These rings can sometimes be seen on the surface as circles/rings. These do not affect performance or strength. |
| White Mineral Deposits | White mineral deposits are lighter patches or markings caused by natural concentrations of calcium or other minerals within the stone. They may appear as soft white spots, veins or cloudy areas. These deposits are natural and may be present in some pieces. |
| Production Enhancements | Where necessary we may use epoxy stone filler, darkening grout pens or localised sanding and smoothing to refine the appearance of the hearth surface and edges. These steps are part of our normal production process and are used to enhance the overall look of the product. They are not considered faults or signs of a lower grade material. |
| Application & Packaging | |
| Suitable For | Fire hearths, stove bases, fireplace hearths, chamber floors, inglenooks and internal stone features. |
| Application | Internal use |
| Sealing | Sealing is recommended to reduce marking and improve resistance to staining and everyday spills. |
| Installation Notes | Install on a level, load bearing substrate and allow for movement due to changes in temperature. The hearth should not be in direct contact with open flame. Use suitable adhesives and sealers designed for natural stone. |
| Packaging | Supplied on wooden pallets or in wooden crates with appropriate protective layers. |
| Availability | Supplied in various sizes and cut to size hearths, subject to order requirements and stock. |
FAST UK DELIVERY — PRICED FAIRLY AND TRANSPARENTLY
We believe delivery should be clear, honest, and consistent. That’s why we don’t advertise “free delivery” while quietly building the cost into product prices or adding unexpected surcharges later in the checkout.
Instead, we charge delivery separately and transparently, so you can see exactly what you’re paying for, and so customers who order smaller quantities aren’t unfairly subsidising larger deliveries.
We deliver across the UK, including the Scottish Highlands & Isles, Northern Ireland, the Channel Islands, the Isle of Wight and the Isle of Man.
WHY WE DON’T OFFER “FREE DELIVERY”
There’s no such thing as truly free delivery — the cost has to be covered somewhere. Some retailers do this by:
- Increasing product prices to absorb delivery costs, or
- Adding extra charges at checkout (often based on delivery size/weight or certain postcodes)
Our approach is simple:
- Product prices stay product prices.
- Delivery is shown clearly and charged based on what it actually costs to send your order safely and on time.
DELIVERY CALCULATIONS
Delivery is calculated based on factors such as:
- Order size and weight
- The type of goods being shipped
- Delivery method (parcel, courier, pallet)
- Delivery location within the UK
You’ll always see the delivery cost clearly before you pay — simply enter your postcode at checkout and your delivery options will appear.
DISPATCH & DELIVERY TIMES
We aim to dispatch orders as quickly as possible, usually within 1–2 working days (subject to stock and order volume).
Delivery times vary depending on your location and the delivery method selected.
If your order is urgent, please contact us and we’ll do our best to help.
COLLECTION FROM OUR PETERBOROUGH DEPOT (PRIMETHORPE PAVING)
Collection is available from our Peterborough depot at Primethorpe Paving, Bungalow Business Park, PE6 7PP.
Please select the collection option at checkout (where available) or contact us to arrange a suitable time.
TRACKING & DELIVERY UPDATES
Where available, we’ll provide tracking details once your order has been dispatched.
ACCESS & DELIVERY RESTRICTIONS
To ensure a smooth delivery, please check:
- Access for large vehicles (if your order ships by pallet)
- That someone is available to receive the delivery
- Any site restrictions (narrow lanes, height limits, timed access, etc.)
If you’re unsure about anything, contact us before ordering, we’re happy to advise.
Express Black Limestone Hearths
These low-cost Express Black Limestone hearths are ideal for when you need a natural stone hearth in a hurry. Made from riven black limestone and supplied with in straightforward square or rectangular cut, they offer an affordable way to achieve a perfect low cost hearth with a fast turnaround. Express hearths are typically delivered in around 3 working days, making them perfect for last-minute projects or urgent installations.
Each hearth is cut to your requested size with clean sawn edges, ready for you to trim, seal or finish on site if needed or to be installed as it is. The natural surface gives a beautiful appearance that works well with both traditional and contemporary fireplace designs.
For the best more understanding of the stone’s natural characteristics and performance, please refer to the Specification tab where all key technical details and natural features are clearly listed.
Easy Ordering
- ✓ Select your preferred thickness
- ✓ Choose the base size closest to your required dimensions from the dropdown
- ✓ Enter your cut-to-size measurements — we’ll handle the rest
Key Features
- ✓ Square or rectangular only for fast, efficient processing
- ✓ Precision cut to your requested size
- ✓ Clean sawn edges – supplied unsealed
- ✓ Fast 3-day delivery available across the UK
- ✓ No hidden costs or unnecessary delays
- ✓ Ideal for on-site trimming or DIY fitting
If you require a more complex shape, angled cuts or detailed edge profiles, please take a look at our Bespoke Cut-to-Size Limestone hearth option.
| Product Specifications | |
|---|---|
| General | |
| Product Name | Kota Black Limestone – Hearth Grade |
| Material Type | Natural limestone |
| Category | Fire hearth slab / fireplace stone |
| Country of Origin | India |
| Dimensional Tolerance | All dimensions are cut to size with a manufacturing tolerance of ±5 mm. |
| Thickness Options | 30 mm and 50 mm |
| Colour Description | Charcoal to black with natural tonal movement |
| Surface Finish | Textured natural finish with orange peel texture and occasional light riven features |
| Natural Variation | Medium variation in tone, shading and texture |
| Edge Finishing Notes | All edges are precision machine cut and then hand-sanded if needed. Due to the natural structure of limestone, small sanding marks, slight tonal variations along the edges and occasional tiny micro-chips may be visible. |
| Weight | Approx. 80–135 kg per m² depending on thickness |
| Density | Approx. 2,650 kg per m³ |
| Technical Characteristics | |
| Heat Absorption / Retention | High thermal mass, excellent heat absorption and steady heat dispersal |
| Maximum Temperature Resistance | Typically performs safely up to approx. 300–400 °C before risk of thermal shock. Hearth must not be in direct contact with an open flame. |
| Compressive Strength | Approx. 80–120 MPa |
| Flexural Strength | Approx. 8–12 MPa |
| Porosity | Medium |
| Water Absorption | Approx. 1–2% |
| Thermal Conductivity | Approx. 2.5–3.0 W/mK |
| Chemical Sensitivity | Sensitive to any acid |
| Stain Resistance | Moderate, improved with suitable sealing |
| Salt Sensitivity | Slight, as expected with natural limestone |
| Natural Characteristics of Limestone | |
| General Nature of the Stone | Kota Black Limestone is a natural stone formed over millions of years. Natural variations and features are part of its geological make up and cannot be avoided or deemed as faults. These include tonal changes, mineral markings and texture differences, all of which give the hearth its unique and authentic character. |
| Pyrite / Fools Gold | Pyrite is a natural iron sulphide mineral that can appear as small metallic gold or bronze coloured flecks in the stone. It occurs naturally within black limestone. We carefully select and cut material to reduce visible pyrite, but it is not always possible to avoid completely. In some cases pyrite may be hidden inside the stone and only becomes visible once the slab is cut to size, often as small spots on the edges. This cannot be detected before cutting and is not considered a defect. |
| Fine Quartz Lines | Fine quartz lines are narrow white mineral lines that form when silica rich minerals fill small natural fractures in the stone. They may appear as thin pale lines or streaks across the surface. We always aim to minimise prominent quartz lines, but some are unavoidable. They are sound, stable and part of the natural structure of the limestone. |
| Surface Rings | Surface rings are subtle circular or halo like markings created by gas bubbles during the hardening of the stone as it formed. These rings can sometimes be seen on the surface as circles/rings. These do not affect performance or strength. |
| White Mineral Deposits | White mineral deposits are lighter patches or markings caused by natural concentrations of calcium or other minerals within the stone. They may appear as soft white spots, veins or cloudy areas. These deposits are natural and may be present in some pieces. |
| Production Enhancements | Where necessary we may use epoxy stone filler, darkening grout pens or localised sanding and smoothing to refine the appearance of the hearth surface and edges. These steps are part of our normal production process and are used to enhance the overall look of the product. They are not considered faults or signs of a lower grade material. |
| Application & Packaging | |
| Suitable For | Fire hearths, stove bases, fireplace hearths, chamber floors, inglenooks and internal stone features. |
| Application | Internal use |
| Sealing | Sealing is recommended to reduce marking and improve resistance to staining and everyday spills. |
| Installation Notes | Install on a level, load bearing substrate and allow for movement due to changes in temperature. The hearth should not be in direct contact with open flame. Use suitable adhesives and sealers designed for natural stone. |
| Packaging | Supplied on wooden pallets or in wooden crates with appropriate protective layers. |
| Availability | Supplied in various sizes and cut to size hearths, subject to order requirements and stock. |
FAST UK DELIVERY — PRICED FAIRLY AND TRANSPARENTLY
We believe delivery should be clear, honest, and consistent. That’s why we don’t advertise “free delivery” while quietly building the cost into product prices or adding unexpected surcharges later in the checkout.
Instead, we charge delivery separately and transparently, so you can see exactly what you’re paying for, and so customers who order smaller quantities aren’t unfairly subsidising larger deliveries.
We deliver across the UK, including the Scottish Highlands & Isles, Northern Ireland, the Channel Islands, the Isle of Wight and the Isle of Man.
WHY WE DON’T OFFER “FREE DELIVERY”
There’s no such thing as truly free delivery — the cost has to be covered somewhere. Some retailers do this by:
- Increasing product prices to absorb delivery costs, or
- Adding extra charges at checkout (often based on delivery size/weight or certain postcodes)
Our approach is simple:
- Product prices stay product prices.
- Delivery is shown clearly and charged based on what it actually costs to send your order safely and on time.
DELIVERY CALCULATIONS
Delivery is calculated based on factors such as:
- Order size and weight
- The type of goods being shipped
- Delivery method (parcel, courier, pallet)
- Delivery location within the UK
You’ll always see the delivery cost clearly before you pay — simply enter your postcode at checkout and your delivery options will appear.
DISPATCH & DELIVERY TIMES
We aim to dispatch orders as quickly as possible, usually within 1–2 working days (subject to stock and order volume).
Delivery times vary depending on your location and the delivery method selected.
If your order is urgent, please contact us and we’ll do our best to help.
COLLECTION FROM OUR PETERBOROUGH DEPOT (PRIMETHORPE PAVING)
Collection is available from our Peterborough depot at Primethorpe Paving, Bungalow Business Park, PE6 7PP.
Please select the collection option at checkout (where available) or contact us to arrange a suitable time.
TRACKING & DELIVERY UPDATES
Where available, we’ll provide tracking details once your order has been dispatched.
ACCESS & DELIVERY RESTRICTIONS
To ensure a smooth delivery, please check:
- Access for large vehicles (if your order ships by pallet)
- That someone is available to receive the delivery
- Any site restrictions (narrow lanes, height limits, timed access, etc.)
If you’re unsure about anything, contact us before ordering, we’re happy to advise.
