Question

fe2o3 is natural magnet or artifial magnet and fe2o3 is which stone

Answer 1

it is a natural magnet
iron ore iode stone or magnetic or black iron oxide

Answer 2

it has two phases:-

Natural iron oxides are derived from hematite, which is a red iron oxide mineral; limonites, which vary from yellow to brown, such as ochers, siennas, and umbers; and magnetite, which is black iron oxide. Synthetic iron oxide pigments are produced from basic chemicals.

Generally, they are from the Phanerozoic which means that they range in age from the present to 540 million years ago. They can contain iron minerals from the following groups: oxides, carbonates, and silicates. Some examples of minerals in iron-rich rocks containing oxides are limonite, hematite, and magnetite.

hope it helps ^-^