Small rough Hematite pieces, otherwise known as Iron ore.
Collectors may be interested in a single stone as a display item, although these stones are absolutely not suitable for use in fishtanks or aquariums as gravel – they would rust!
The pieces are reasonably small, measuring around 20-50MM each.
In the kilogram bags, the sizes and quantities all differ drastically from one bag to the next. One bag may contain 10 pieces of 20-60MM, one bag may contain only a single kilogram chunk.
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!