Arfvedsonite tumblestones (1114804)

Arfvedsonite is a rare, dark blue-black to greenish-black sodium amphibole mineral known for its brilliant, fibrous, or radiating blue flashes. It crystallises in the monoclinic system and is frequently found in pegmatites and alkaline igneous rocks.

It is often mistaken for Nummite or Astrophyllite.

Price is per stone - each measures 1" approx.