Amethyst Geode Cut Base - 410gm

Amethyst Geode Free Standing Cut Base - gorgeous lilac purple colour and stunning multi-layer flower formation of geode

410gm - 9cm x 7cm x 6cm

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