Fulgurite specimens – Lightning Glass

Fulgurite specimens, known as ‘Lightning Glass’, typically collected in Algeria.


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Fulgurite specimens - Lightning Glass

Fulgurite specimens, known as 'Lightning Glass', typically collected in Algeria.

Fulgurites form when lightning strikes sand or silica rich soil in a large flat area like a desert or beach.

As lightning strikes the highest point around, and deserts tend to be very flat, lightning often hits the sandy floor. They are typically hollow, with a rough outer surface and a smooth, shiny inner surface. A lot of the smaller pieces are just rough lumps, though.

As these pieces are quite fragile, we tend to overpack them. Unfortunately, this does mean charging more for postage - we don't send these as large letters.


We currently have one slightly larger than normal specimen in stock:

  • #1 - 75x61x14.5MM, from Algeria - it is a largely flat lump and does not have a hollow tube all the way through, although the tube formation can be seen at either end.



The pictures you see here are representative of the products and are usually not the exact item you will receive. Where various grades are available we do try to photograph each grade - but some photographs are still on their way!

Frequently asked questions and delivery information

How do we grade stones?

There is no overall universal grading system for the majority of our products. As such, the grades we use are internal only. They simply refer to higher and lower qualities, but they may be entirely different grades to other websites. C grade pieces are of lower quality than B grade, which is lower than A grade.


How does our ordering and delivery process work?

You place an order via the website. When it’s been picked and packed, your order will be marked as completed and dropped off at our local post office. We have an account with the post office called a “Drop and Go” account, which allows the post office staff to process our parcels when they have free time, rather than me queuing up and delaying everyone else.

I get tracking information etc online when this has been completed. I typically do not send tracking information to customers unless they request it – but if you’ve requested tracked postage, it has been sent tracked! If you have any worries or concerns about your parcel being delayed please feel free to get in touch and I’ll send the tracking info over! We also get delivery confirmations for parcels over 25MM thick by default.


How do international orders work?

After Brexit, with the UK leaving the European Union, certain things have changed with regards to international orders. European Union customers will now likely be liable to pay the same amount of import VAT as any other international customers. You will be responsible for any customs and import fees.


I’d like to return my order for a refund.

No problem at all – just get in touch and we’ll arrange it. You can read our full returns policy here.


What payment methods do you accept?

I can accept Paypal, Stripe, cheque, and direct bank transfers. Paypal and Stripe will both allow you to pay with credit and debit cards.



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