Black Basalt 20mm Black Basalt 20mm Black Basalt 20mm Black Basalt 20mm Black Basalt 20mm Black Basalt 20mm Black Basalt 20mm


John Hope

Great Service and product. Delivered as requested and special mention for the driver who did everything with a laugh and joke, rather than the long face you normally get. Would recommend this company to anyone looking for customer service as it should be.

Tim Gurney

Great price, fast delivery. I would use again no doubt. Thanks!

Nicholas Crosby

This is an extraordinary good service. Many stone companies are too laid back and deliveries can be difficult to organise accurately. Gravelmaster is spot on. If their current system is 100% covered they are onto a winner as I wont bother going elsewhere.

Richmond Bauer

Full marks all around! I was having trouble finding 20mm black basalt in smaller bags so I ordered a bulk bag. Result? I got exactly what I wanted for almost the same price as smaller bags (had they been available) and my only problem now is how to get rid of the excess. That or I'll have a very trendy looking garden with black basalt mulch everywhere. Many thanks. R. Bauer

Steven Chilvers

Really good product and price. Especially pleased with the delivery which was performed by their own driver who was very helpful.

mr C Hayes

Does what it says no dramas

Black Basalt 20mm

From £99.00

Step 1 - Select your delivery postcode area (required)

Step 2 - Select the type you require

Bulk Bag
Approx 850Kg Bulk Bag
1 Bag
Sample (Under 1KG)



This stunning 20mm Black Granite is becoming increasingly popular because it is hard-wearing and perfect for the use on driveways. It is perfect for making a bold statement in your garden and adding the wow factor. The stone reflects the light and will look beautiful in any garden to add style. Due to the durability of this stone it will remain looking beautiful in your garden for many years.

Black Basalt 20mm

Bag Size: Approx 850Kg Bulk Bags and 20kg Sealed Bags
Size: 20mm
Uses: Driveways, Water Features, Rockeries and Aquatics
Colour: Black (grey when dry)
Shape: Angular
Specification: BS EN 1260

Colour and Shape

This gravel shows a grey colour when dry, yet reflects a beautiful black colour when wet; making this a versatile product. it is available as an angular gravel and is a naturally quarried product, which may result in variations of size and shape.


We can usually accommodate a next day delivery service if the product is ordered before 1pm for an additional cost. Normal delivery is 2-3 working days from when the order is placed. The delivery is also subject to weather conditions and stock levels. All supplied in Bulk Bags (850KG) or Sealed bags (20KG). We also supply a sample which is a small poly bag sent via first class post.

Loose Load Deliveries

For a competitive loose load delivery price (bulk deliveries) for large areas please contact our sales team on 03300585068.

  • Loose load orders
    T:0330 058 5068
  • Delivery Lorry
  • Loose tipped 10, 20 and 30 tonnes