20mm Blue/Black Limestone

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A 20mm Limestone gravel sourced from local quarries in the South West.

Our Blue Black limestone chippings boast a consistent range of blue 20mm stones with small white veins running through. The occasional white, brown & pink stone can also be be found, owing to the nature of this product. Once wet, this blue stone changes to a deep black colour.

This is a very hard wearing stone, perfect for driveways, paths & general landscaping.

Available in small 25kg polybags, large 800kg jumbo bags or loose by the ton.

Please read the description below for detailed information about this stone.



A 20mm Blue/Black Limestone gravel known locally as Hardstone. This product falls under the category of sedimentary rocks, formed by the accumulation or deposition of mineral or organic particles. These 20mm chippings are quarried in the South West & packaged in Cornwall.

Our 20mm Blue/Black Limestone is graded with the largest stone no bigger than 20mm. Due to the screening process, this can mean that smaller sizes of 10mm can be found within this product.

As this is a natural product, the colours may vary between batches. When bagged the stone will usually have a covering of dust which can make the stone appear a different colour. Once the dust has washed away, the true colour of the stone will emerge.

  • Bulk/Jumbo bags are filled to an approximate weight of 800kg.
  • Small polybags are filled to an approximate weight of 25kg.
  • Free sample bags are filled to a weight of 1kg.
  • Loose material is supplied on a per ton basis. This is available locally & nationally by request.

Additional information

Weight N/A
Dimensions N/A

Small 25kg Polybag, Bulk Bag, Loose, Free sample


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Registered office: Cornwhaul Ltd, The old coal yard, Roche Road, Bugle, PL26 8PP

Company number: 13218629

VAT number: GB 386364069

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