It's often tied with the cathedral Santiago de Compostela, given to pilgrims who make it all the way to the cathedral. The multiple converging lines of the shell have been compared to the multiple pilgrim trails to get to the cathedral from all over Europe.
By attaching it to your heraldry you're stating successful completion of the pilgrimage, or at least trying to make it look like you've gone on the pilgrimage. Later it becomes a symbol of Christianity in general and its meaning becomes more varied.
A scallop shell
Heraldry is alive and well.
It's called heraldry.
Heraldry came from Ancient Egypt Rome and even England.
Heraldry is tracing a noble family line and having an emblem that was used for flags and armor.
Baptism is often represented by a scallop shell
Some versions of the birth of Aphrodite have her washing onshore on a large scallop shell. "Botticelli's Birth of Venus" is an example of this motif/story. The scallop shell may also refer to the female genitals, as the ancient Greek word for scallop, kteis, may mean either. "Laughter-loving" Aphrodite undoubtedly smiles at the double entendre.
The scallop shell can represent the sacrament of Baptism or it can also represent St. James the Greater.
It's a Scallop shell.
Scallop shell
a shell is concave and can hold water to baptise
bay scallop
A scallop shell is often used to pour the water at baptism. The part that is a delicacy to eat is the adductor muscle, that is, the muscle that pulls the two shells closed.
A scallop is like a clam, and lives in a typically narrow shell. The scallop itself resembles a whitish disk (like a squashed marshmallow).
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clam ,oyster ,scallop
apple mirror or scallop shell