(chain/cord for necklace not included).
The shell is made of a real ammonite fossil.
the fossil was cut in half, then polished, so you can see the individual chambers inside.
the brooch section at back is a stainless steel bar pin with a C-clasp closure.
Each brooch is made from an actual, natural fossil,
so they vary in size, color, and pattern.
may have various flaws like cracks, chips, or little geodes/holes.
pics are of two different species, so you can get a better idea of the variation between fossils.
fairly large, at about 2.75" x 2".
the ammonite section is usually about 1.25" across at widest point.
size varies a bit.
The brooch comes in 2 directions, so you can chose whether you want one with the tentacles facing right, facing left, or a mirrored set of 2.