Small Prophecy Stones from £5.
The Prophecy Stone is associated with opening the third eye chakra, promoting visionary work, and facilitating astral travel.
It is believed to be a powerful tool for meditation, helping to deepen meditative states and strengthen connections with higher realms. 
Some believe it can reduce stress, promote clarity, and improve focus. 
It is also thought to provide stability, power, and centering, particularly during meditation. 
The Prophecy Stone is a pseudomorph, meaning it's a mineral that has taken the form of another mineral, in this case, Marcasite or Pyrite. The original pyrite or marcasite structure has been replaced by limonite and hematite, resulting in the distinctive patterns and color of the stone. 
Prophecy Stones are primarily found in the Libyan Desert, a region also known for Libyan desert glass.