Scoria (Basaltic Lava) Spheres Specimen:C - 55mm (2.17") 5 × 13 × 4

5 × 13 × 4 cm — 1

It forms when silica-rich fluids fill cavities and fractures in volcanic rocks

and visual depth

which is relatively rare among calcite types

Scoria (Basaltic Lava) Spheres Specimen:C - 55mm (2.17") 5 × 13 × 4Crafted from the raw, elemental power of volcanic activity, these Scoria spheres represent the moment fire meets the atmosphere. Formed from basaltic magma rich in dissolved gases, Scoria is created during explosive eruptions. As the molten rock is ejected and cools rapidly, escaping gases leave behind a complex network of vesicles (cavities), resulting in a stone that is surprisingly lightweight yet structurally profound. These specimens feature a