Ilvaite, Sphalerite, Mongolia Gobi Desert Agate It is thought that these

It is thought that these agates are Psuedomoprhs after Calcite or Barite

Inner Mongolia

Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America

15f lithium

Ilvaite, Sphalerite, Mongolia Gobi Desert Agate It is thought that theseThis is a lustrous Ilvaite mineral specimen hailing from the Huanggang Mines of Inner Mongolia. Large size for this material and in excellent condition. Nice aesthetic shape. Ilvaite is a rare black silicate mineral with unique electrical properties. A lovely specimen for collectors looking for less common black crystals to work with. ILVA 0103 Size: 47mm x 32mm x 28mm Origin: Huanggang Mines, Inner Mongolia Ships within 3 business days Read more