Where can you buy neodymium?

Answer 1

Materials such as this may be obtained from laboratory chemical suppliers, and an internet search will show these.

However, some materials (such as Sodium, say) are very dangerous and pose special shipping problems for an individual. Other materials are radioactive, or have other hazards. Or may be proscribed for private use!

Many materials are not easily available as the pure element, and may be supplied as a stable oxide or similar.

Answer 2

Neodymium magnets can be purchased from online retailers such as Amazon, specialized magnet suppliers, and hardware stores. It is important to verify the quality and strength of the magnets before making a purchase.