GLASS VESSELS IN SHAPE OF SHELLS
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Glass Vessels in Shape Of Shells Found in Various Museums

The scallop shell motif can be found on glass dishes, bowls, beakers and flasks from Roman times to the present. They were made by the Romans in the Rhineland during the 1st to 4th centuries and were copied at Murano in the 16th-17th centuries. Technique used was mold blowing.
Romishch-Germanischen Museum 3rd to 4th C.
Romishch-Germanischen Museum 3rd to 4th C.
The State Hermitage Museum, 1st C.AD H: 8.5cm
British Museum D: 1st C. H: 8.5 cm

Toledo Museum of Art D:16th C. H: 24.8 cm
Chrysler Museum of Art D: 3rd-4th C.
Scallop shells are still used to mark the pilgrim route to Compostela in Spain, one route runs close to my house. The pilgrims walk or cycle and have a scallop shell hanging from their backpacks. In places there are brass scallop shells embedded in the ground to show them the way.