Large Natural Black Obsidian Crystal Freeform 11.5kg unique interior Size: 11 x 7 x

Size: 11 x 7 x 5 cm

Saxony Germany

Exceptional Large Chalcopyrite & Calcite On Fluorite Specimen

Size: H 35 x 14 x 19 cm approx

Size: 13  x 7 x 9cm (circa)

Large Natural Black Obsidian Crystal Freeform 11.5kg unique interior Size: 11 x 7 xPresenting the Large Natural Black Obsidian (Volcanic Glass) Natural Freeform Natural black obsidian is a volcanic glass that forms when molten lava cools rapidly. It is composed mainly of silica and is known for its smooth, glassy texture. The deep black color of obsidian is a result of the presence of iron and other impurities. This deep black crystal with a mesmerizing sheen, has been revered for centuries for its mystical properties and elegant