Vintage Logo Thrifty Drug Store - Employee Pins with Boxes 10k? Sterling? gem?

Description

Vintage Logo Thrifty Drug Store - employee pins with box
These were inherited.  They seem to have some markings on the back but they were not completely legible. Based on other listings I have seen I thought maybe that one could be sterling and another 10k but I have not tested them and don't know.  I don't know what kind of stone/gem is in one of them.  Please review the pictures.  Sold As Is.
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