Notes on this specimen, cut and polished by Passingstones:

Outer crust: Rust-brown rind showing iron oxide weathering typical of agate nodules from Turkish basaltic deposits.

Banded zone: Alternating grey, white, and translucent bluish layers — this rhythmic silica deposition is classic for Turkish agates.

Greenish inclusion zone (bottom band): That moss-like green area is characteristic of moss or plume agatefeatures — likely from chlorite, celadonite, or iron-nickel silicates incorporated during deposition.