2.9" Pink Amethyst Geode with Calcite - Argentina

This is a beautiful find out of Argentina, featuring true pink amethyst crystals from the Choique Mine. It occurs in geodic formations or cavities lined with crystals.

This geode is 2.9" wide (measured across the broken face) and also has some calcite crystals inside of it. Both halves of the geode are included.

The material has been analyzed at the California Institute of Technology and was described as "purplish pink amethystine quartz additionally coloured by microscopic hematite particles. They are not rose quartz or pink quartz as classically defined".

So, it's formed by the same processes that give amethyst its purple color, but by definition amethyst is purple not pink. So, we are left with a conundrum of what to call it, but since the majority of people seem to be calling it "pink amethyst" we will stick with that label.
Quartz var. Pink Amethyst & Calcite
Choique Mine, Pehuenches, Neuquen, Argentina
2.9" wide