Ancient fossils of the extinct ammonite mollusk are sliced open to reveal swirling chambers of minute crystalline inclusions. High-polish brass casings frame each piece, which is fixed to brass teardrop coils for an exquisite finish.

Medium ammonites weigh 14 grams each and measure 3" by 1".
Large ammonites weigh 37 grams each and measure 4" by 1 1/2".