Nice quality Dumortierite tumblestones, available in a few sizes.
These are a nice banded blue colour, which is reasonably pale compared to some Dumortierite.
These stones would make a nice decorative stone gravel for a fishtank or an aquarium, and look great in a vase, flowerpot, etc. Because of their colour, they contrast nicely against black stones and other shades of blue, too.
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!