Every so often, we come across fantastic rocks which we just love. When we are really, really lucky, people who are having a clear-out give us their old rocks and crystals, and we find something amazing. This pyrite is amazing. It has very defined, structured crystals and a beautifully golden finish.

This comes with a note from the original owner describing that it was sold as pyrite from Boccheggiano in Tuscany, Italy.

This is a tough one. We struggled to find an accurate price. Pyrite from the Tuscan archipelago can be worth hundreds of pounds. The cheapest we have seen a chunk for is in the fifties. This chunk is smaller but of similarly great quality. We don't want to overcharge and we don't want to undercharge. So how about this: if you don't think this price is fair then make us an offer.