Amethyst Geode – Extraordinary Deep Purple Microcrystallization - Height: 220 mm - Width: 170 mm- 6146 g






Holds a master’s in chemistry with 25 years’ experience in minerals consulting.
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Description from the seller
A bubble of air imprisoned in basalt.
An ancient breath, suspended under pressure as the lava cooled, slowly, in the dark.
Thus this cavity was born, a secret chamber of the Earth, where time has created crystals, amethyst, the memory of fire.
Purple and gleaming tips, the echo of what was movement, heat, explosion… and then silence.
This geode is the form of an event, of the Arapey Formation, dating to the Early Cretaceous.
A small geological universe, enclosed in rock, a vibration in an impossible balance, between force and quiet, between magma and silence.
During the volcanic activity of that era, basalt flows solidified, trapping gas bubbles that formed empty cavities. Over time, silica- and iron-rich hydrothermal solutions penetrated these cavities and began to crystallize slowly, forming amethyst crystals. The purple color derives from the presence of iron ions and from natural exposure to radiation over millions of years.
Seller's Story
A bubble of air imprisoned in basalt.
An ancient breath, suspended under pressure as the lava cooled, slowly, in the dark.
Thus this cavity was born, a secret chamber of the Earth, where time has created crystals, amethyst, the memory of fire.
Purple and gleaming tips, the echo of what was movement, heat, explosion… and then silence.
This geode is the form of an event, of the Arapey Formation, dating to the Early Cretaceous.
A small geological universe, enclosed in rock, a vibration in an impossible balance, between force and quiet, between magma and silence.
During the volcanic activity of that era, basalt flows solidified, trapping gas bubbles that formed empty cavities. Over time, silica- and iron-rich hydrothermal solutions penetrated these cavities and began to crystallize slowly, forming amethyst crystals. The purple color derives from the presence of iron ions and from natural exposure to radiation over millions of years.
