Very rare, Blue Smoke crystal.
This Blue Smoke weighs 30g and measures 80mm long
These Colombian Blue Smoke crystals come from the Santander province in Colombia. These are super special because they show a clear blue smoke internal structure. They have swirling clouds of almost invisible micro-inclusions that produce a bluish opalescence when held up to the light. This subtle colour effect is produced by the same light-scattering properties that make the sky blue. The silvery flakes on and in the quartz is an uncommon lithium mineral. The silver Cookeite membrane is often embedded in the faces of the quartz crystals, or scattered through the matrix, and even as inclusions inside the quartz, making them true Litihim Quartz.
Thanks for looking
Castle Rocks Cornwall x