The magnets which are not natural are known as ____ magnets.

Answer

**Step-by-Step Solution:**

1. **Understanding the Types of Magnets**: Magnets can be classified into two main types: natural and artificial magnets. Natural magnets occur in nature, such as lodestone, while artificial magnets are man-made.

2. **Definition of Artificial Magnets**: The magnets that are created by humans through various processes are called artificial magnets. These magnets do not occur naturally and are manufactured for specific purposes.

3. **Examples of Artificial Magnets**: Common examples of artificial magnets include bar magnets, horseshoe magnets, and refrigerator magnets. These are made from materials like iron, nickel, and cobalt.

4. **Conclusion**: Therefore, the answer to the question is that the magnets which are not natural are known as **artificial magnets**.

---