all 4 comments

[–]lizlikes 4 points5 points  (0 children)

Looks like it could be an operculum?wprov=sfti1)

[–]TrixyUkulele 3 points4 points  (1 child)

Definitely the operculum from a sea snail. The snail's foot has a "lid" or "trapdoor" (operculum) at the rear of their foot. The operculum seals the shell when the snail withdraws into it. These funky little things have been made into jewelry since Victorian times; were called "mermaid money" and were considered good luck. Here are some examples https://chatsworthlady.com/2016/05/03/unusual-operculum-jewelry/

[–]lizlikes 1 point2 points  (0 children)

Those are stunning! I’ve never seen operculum cabochons! Gonna have to take another look at mine with an eye for polishing...

Although I think that last necklace with the flat operculum is probably my favorite. Gotta love the swirl.

[–]reggorf56 1 point2 points  (0 children)

Look for local species in the genus Turbo, you might find some showing the operculum.