Amethyst Geode Cut Base Freeform - 2.5kg

Sparkling 24cm tall Mauve/Grey Amethyst Geode Cut Base freeform.

Over 2.5kg.

• Amethyst is a variety of quartz composed of silicon dioxide (SiO₂).

• It forms when quartz crystallises from silica-rich fluids, most commonly in hydrothermal veins and in cavities within volcanic rocks such as basalt.
  

• Like all quartz, amethyst has a hardness of 7 on the Mohs scale.

• The colour is caused by trace amounts of iron within the quartz crystal structure, modified by natural irradiation from surrounding rocks.
  

• Most of our Amethyst is sourced directly from Brazil.