Only available at Treak Cliff Cavern


See areas of the caves and mines not normally open to the public.


Prospect for your own piece of Blue John.


Work with our craftspeople to polish your stone…


Select pieces from our workshop to create your own jewellery set in silver.

The Blue John Stone Experience at Treak Cliff Cavern

Blue John Stone is a rare, semiprecious mineral found at only one location in the world – in the caves of Castleton, Derbyshire in the Peak District National Park.

This is a truly unique, “hands-on” experience enables you to work with Treak Cliff Cavern family and staff to get really hands-on with this unique stone.

Learn about the geological formation of caves within the Peak District National Park and  meet the family who own and care for the mine.

Go prospecting on the spoil heap for your own piece of Blue John stone in the mines here at Treak Cliff Cavern. Our expert craftspeople will guide you through polishing your selection and you’ll also be able to choose additional pieces from the workshop to make into a window hanger and a piece of silver-mounted jewellery.

Places are strictly limited as this experience only runs January to March – for booking information please see the main Booking Page.

Explore Treak Cliff Cavern's mines


See areas in the mines and caves not normally accessible to the public. 

Search for a piece of Blue John Stone


Search for your very own piece of Blue John… 

Inside the Treak Cliff Cavern gift shop


…And our experts will guide you through the process of polishing the sample you’ve found.

Create your own piece of Blue John Jewellery


In our workshop you’ll also create a silver mounted piece of jewellery.

See more in our gallery below.

What will you do at the Blue John Stone Experience?

You’ll meet us at the visitor centre at 10.00am and be greeted by your host for the day and are shown around the museum and visitor centre.
Duration: 10 minutes

After refreshments you’ll be taken on a tour of the cavern to see the stalactite formations and learn about the history of the caverns. You’ll also learn about the mining of Blue John Stone and be able to go into the mining area to prospect for your own piece of Blue John Stone.
Duration: 1 hour 30 minutes

After lunch, you’ll clean and prepare the stone you found earlier and be shown by our expert craftspeople how to grind and polish your piece of Blue John, you can choose your own sterling silver jewellery blank to set with another stone selected from our workshop. Each piece of Blue John Stone has distinctive pattern and colour combinations, you’ll creating very own piece of unique jewellery. 
Duration: 4 hours

Total duration: approx 5-6 Hours

What’s included?

  • Coffee and/or tea after your 20-minute introduction.
  • Workshop equipment and PPE Helmets, gloves etc.
  • Tour of Treak Cliff Cavern.
  • Craftspeople on hand to guide you through all relevant processes.
  • Piece of Blue John stone chosen by yourself in our mines.
  • Additional pieces of pre-prepared Blue John stone with which you can create your own single piece of jewellery. If you chose to make paired jewellery (e.g earrings) there is an extra charge for the additional item.
  • Silver mount for the jewellery (additional charge for the second of paired items).

What do I need to bring?

  • The underground temperature is a constant 10°C (50°F) so we advise that you wear suitable clothing.
  • The cavern floor is constantly wet due to the natural underground environment; therefore suitable footwear must be worn within the underground area. Please be aware that the most ‘sensible’ footwear can cause an individual to slip.
  • A selection of hot and cold drinks are now available from our cafe.


Cost per person


Recommended number of people

Minimum of 1 person
Maximum of 2 Persons 


5-6 hours


You can book online via our main booking page.
Alternatively you can contact us by email or phone 01433 620571.


Other info and Accessibility

Health and safety

You must be of a reasonably active and fit to take part. You’ll be walking on uneven surfaces and encountering steps and occasionally steep stairways.
Not recommended for travellers with back problems.
Not recommended for pregnant travellers.
No heart problems or other serious medical condition.


Due to the natural contours of the hillside above and below ground, the cavern is not suitable for wheelchairs. Walking disabled can be accommodated and extra helpers where necessary are allowed into the cavern at no charge. Please phone 01433 620571 or email us for further information to see how we can help. Our Risk Assessment also provides more detailed information.


This experience requires good weather in order to access the cavern but this will likely only apply if snow causes problems. If it’s cancelled due as a result, you’ll be offered a different date or a full refund.

The new Treak Cliff Cavern Interpretation Centre is part-funded by the European Agricultural Fund for Rural Development - to upgrade the visitor offer, by providing a heritage and interpretation centre. Project reference number: 101006.

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