THIS edition of Part 3 of Winchell's “Elements of Optical Mineralogy”, now published separately, entirely supersedes the earlier edition, which was incorporated with Parts 1 and 2 in one volume.

If you’ve stumbled across Introduction to Mineralogy—or its Japanese title, Ruri no Hōseki (a.k.a. Ruri Rocks or Ruri’s Jewels)—you might be wondering: is this anime about sparkling gems, quirky high ...

Nadine Baggott busts mineral make-up myths and gets a tutorial from Sarah Jane Froom on how to achieve a quick flawless face. I wear mineral make-up every day and think that it's the quickest, easiest ...