This is an thick, heavy, solid seashell. They are glossy and are
common to Indo-Pacific/Africa. They have been used to make
cameo jewelry for about 150 years.
The Cypraecassis Rufa seashell is in the Cassidae family, it has
two common names, the Cameo seashell and the Bullmouth
helmet seashell.
The Bullmouth helmet shell for sale on this page range from 5" to 5-1/2" long.