Black Cobbles 40-90mm


The largest in our Black Ebony range, these 40-90mm basalt cobbles have been gently tumbled to create a more rounded stone. Charcoal grey when dry, they turn a glossy black when wet. For maximum effect and a contemporary look, pair with brightly colour, Read more.

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Product Description

The largest in our Black Ebony range, these 40-90mm basalt cobbles have been gently tumbled to create a more rounded stone.

Charcoal grey when dry, they turn a glossy black when wet. For maximum effect and a contemporary look, pair with brightly coloured flowering plants or lighter, contrasting materials.

These black garden cobbles are derived from natural limestone and are 100% environmentally friendly.

Size: 40-90mm

Endless Possibilities at Corker

Add interest and intrigue to your garden with Corker’s range of decorative aggregates. We stock an impressive choice of types, sizes and colours, so you’re sure to find the perfect products to turn your landscaping aspirations into reality.

Use one type to create a uniform theme, use two or three in different areas to create contrast, or think totally outside the box and mix products together!

All of our gravel, pebbles, shingle and chippings have a long lasting mulching effect. A layer of stones will insulate soil and improve drainage in cold, wet weather, and provide root shade and aid water retention in hot weather. Hard mulches are also brilliant at stopping weeds in their tracks, meaning you have more time to spend on the gardening jobs you enjoy.

Our decorative aggregates are suitable for driveways, paths, borders, rockeries, water features and much more.

Any questions? See our FAQs below or feel free to WhatsApp or call us to speak to one of our aggregates experts.

Benefits & Uses


–        Natural basalt whinstone.

–        Dark in colour – good for creating contrast.

–        Change colour when wet.

–        Create a striking contemporary look.

–        Versatile for soft and hard landscaping uses.

–        Durable.

–        Supresses weeds.

–        Retains moisture.

–        Promotes drainage.

–        Insulating.     .

–        Low maintenance gardening.

–        Fish-friendly.

–        Sustainably sourced.


–        Create contrast against bright or pale colours.

–        Decorative landscaping.

–        Driveways.

–        Paths.

–        Patios.

–        Borders.

–        Beds.

–        Edging.

–        Gravel gardens.

–        Alpine gardens.

–        Rockeries.

–        Water features (we recommend washing prior to application).

–        Gabion stones.

Frequently Asked Questions

Free Local Delivery

We offer free delivery within our local zone (15 mile radius of Paddock Wood) when you order any size bulk bag. Delivery will be made by a Corker Hiab lorry (with mounted crane). Please enter your postcode in the basket to check if you qualify for free delivery.

Drop Off Delivery

There is a £40 delivery charge for orders without a bulk bag in our local zone. When a bulk bag is added to the cart, the order will qualify for free local delivery and the £40 charge will automatically be removed.

Pallet Delivery

For deliveries outside of our local zone (15 mile radius of Paddock Wood) we send items out via a trusted third party courier service. The price for pallet delivery outside our zone is £35 (2-3 days) or £45 (next day).

Parcel Delivery

Orders weighing less than 30kg will be sent via a trusted third party courier service. The price for a parcel under 30kg is £9.99 (2-3 days) and £14.99 (next day).

For further details about our delivery please click here.



See what others have said about Corker, or leave a review.

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Awesome from start to finish, highest quality stone we've ever received and will be purchasing again. Customer service was great too which makes and change in construction!

Charlie Coffey • 1 month ago

Brilliant customer service

Brilliant customer service from the Corker Team yesterday. Really helped us choosing patio paving.

Paddy Ryan • 2 months ago

Good Staff

Good staff,good service

Marek Kowalski • 2 months ago

The best

This company never fails to impress me with their polite, super efficient customer service. I have shopped with Corkers for a year or two now and they have been on point every time. Their office staff, yard staff and lorry drivers are all so jolly. Highly recommended!!

Shane T • 2 months ago

Highly recommend

I can't believe I haven't used Corker sooner! They were the only company to deliver what I needed, when I needed it. Their website was simple to use and even has tutorial videos on how to get the most out of the products.

Rob C • 3 months ago

Thank you

Thank you to Corkers for a great delivery service! We are preparing a greenhouse base alongside various other projects and the Corkers delivery man was kind enough to rearrange all our materials on site when delivering our top soil. Thank you. This company is highly recommended!

Anna Smith • 4 months ago

Very good

My experiences with this company has always been very good.

Graz D • 4 months ago

Pleasure to deal with

Whether dealing with the office team or those making deliveries they are always lovely and friendly. Super helpful too. A real pleasure to deal with

Andrea Peck • 4 months ago

Amazing staff

Amazing staff, very knowledgeable, the show garden is great

Ben S • 4 months ago

Well organised & efficient

Well organised and efficient. Lady serving had lovely silver hair in a bob.

Kevin • 4 months ago

A big thank you

I thoroughly recommend Corkers, it has been a great pleasure dealing with all the team but especially Alice, she has done her utmost to help us with our Garden project.

Sinead Farrant • 5 months ago

Friendly service

Family run friendly service. Very helpful not just for geezer landscapers!

Chris Chaplin • 5 months ago

Unbelievable service

Unbelievable service. I will never go anywhere else for garden needs. Id recommend to anyone. Friendliest most competent staff you could wish to deal with.

Joseph Bell • 5 months ago

Great service

Such a great service at Corker. We were so impressed by how efficient and helpful everyone was across the whole team, but especially Oli who has been our point of contact throughout.

Georgia Clarke • 5 months ago

Great company

Great company to deal with! I desperately needed some ballast a few weeks ago to finish a concreting job, they pulled out all the stops and delivered the same day (Saturday).

James Dear • 6 months ago