Rare earths are a group of 17 metallic chemical elements that are crucial for modern technologies like smartphones, electric vehicles, wind turbines, and advanced electronics.

What rare earths actually are

  • Rare earths usually refer to the 15 lanthanides in the periodic table, plus scandium and yttrium, which behave similarly in chemistry.
  • They are typically soft, silvery‑white metals with very similar chemical properties, which makes them hard to separate from each other.

Why they’re called “rare”

  • These elements are not truly rare in Earth’s crust; some, like cerium, are about as common as copper.
  • The term “rare” comes from the fact that they are usually dispersed rather than concentrated, so it is difficult and costly to find deposits rich enough to mine and process.

Light vs heavy rare earths

  • Rare earths are often split into:
    • Light rare earths: roughly lanthanum to samarium.
    • Heavy rare earths: europium to lutetium (and sometimes including yttrium).
  • Heavy rare earths tend to be less abundant in mineable form and can be more valuable due to their specialized uses.

What they are used for

  • Everyday tech: smartphones, computer screens, hard‑disk drives, LEDs, and speakers rely on rare earths for powerful magnets, color displays, and efficient lighting.
  • Green and high‑tech applications:
    • High‑strength permanent magnets in electric vehicle motors and wind turbines
    • Catalysts in car exhaust systems and petroleum refining
    • Lasers, medical imaging devices, and specialized glass and ceramics

Why they’re a trending topic

  • Rare earths are classified as “critical” materials because of their central role in clean energy and digital technologies, and because supply is concentrated in only a few countries.
  • This creates geopolitical, environmental, and economic debates about mining impacts, recycling, and how to secure more sustainable and diversified supply chains.

TL;DR: Rare earths are 17 chemically similar metals that aren’t truly rare, but are hard to extract and process, and they quietly power much of today’s digital and clean‑energy technology.

Information gathered from public forums or data available on the internet and portrayed here.