Vintage Native American 10 Strand Heishi Clam Shell Necklace 1970s

Vintage Native American 10 Strand Heishi Clam Shell Necklace 1970s. This necklace belonged to my grandma.

Other than that, I don't know much other than by its appearance. I really don't know when or where she acquired this necklace, but the fact that she did tells me it's authentic.

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