Dyed and heated natural agate egg beads; 1mm hole; approx 12mm x 15mm.
Random mix of 5 pieces per order
Origin:  Brazil
Banded agate form in cavities within igneous rocks caused by an accumulation over time of silica-rich groundwater.  Agates themselves are not igneous, metamorphic, or sedimentary rocks, but rather are classified as semi-precious silica mineral.