A material that enchants us as ruby or sapphire and is applied in watches or lasers. A material
that gives us a better life in the form of implants. A material that provides irreplaceable
technical services with its hardness and heat resistance. A fascinating material. Its name is
aluminium oxide. In this book you will find a lot of exciting and often astonishing information
about this extraordinary material. First the necessary facts about the substance aluminium
oxide are given. Then the world of the gemstones ruby and sapphire is described. And finally
the world of alumina as well as technical ceramics is illuminated.
