Difference between Meerschaum and Sepiolite

What is the difference between Meerschaum and Sepiolite?

Meerschaum as a noun is a soft white mineral, chiefly used for smoking pipes and cigar holders while Sepiolite as a noun is a hydrated magnesium silicate, claylike mineral used for carving into decorative articles and smoking pipes

We hope you now know whether to use Meerschaum or Sepiolite in your sentence.