This listing is for a lovely most likely vintage Maine Medical Center 1/20 12 K gold filled pin. Most likely a pin for retirement or as a years served present. This measures .75" in diameter and has 2 pink/red stones? Rubies?  and 1 clear stone. They have not been tested-they could be glass or tourmaline/garnet/rubies and a diamond. There is a filigree perimeter and has MMC on the front with a hospital logo in a silvertone oval with the stones underneath the MMC.  I do not know the age of this piece. Safety clasp on the bag. AS ALWAYS YOUR SATISFACTION IS GUARANTEED.