Eudialyte from Villedieu in Quebec.
Prices from £9.50
A slice of banded fluorite, from China.
Prices from £7.50
Fulgurite, a natural glass formed when lightning strikes sand. These are from Morocco.
Prices from £6.50
Gold nugget in magnifying box, from Fairbanks, Alaska.
Prices from £8.50
A green variety of Heulandite, a zeolite mineral, from Nasik, India.
Prices from £15.00