Issue Highlights: August 2018

Highlights of the August 2018 print edition of Rock & Gem magazine

  • Why Minerals Have Color: Impurities and other factors cause the colors we see
  • The 'Unicorn' Citrine Scepter and Yellow Agates
  • Mexico's New Classics: Several sources produced unrivaled specimens of admit and legrandite
  • The Caverns of Sonora, Texas: An enchanting panorama of silhouettes
  • Rare-Earth Elements: A timely look at their minerals and metals
  • Minerals Through Geologic Time: Part I – Minerals of the Precambrian
  • Moroccan Aragonite: Specimens by the millions
  • Rock Shops of Distinction: Part I – This revamped emporium exudes community spirit

Not a subscriber? Become one today!