This is a painting, 5 x 7 of the shells of cockles (cardiidae). Before the era of modern medicine, heart patients were given ground-up cockles shells by physicians. This painting appeared in the March edition of The Breeze, Magazine of the Lowcountry. For more information on the painting, click here.
Cronesinger.com 
Thanks for sharing. Got to enjoy a neat painting and also learned something.
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