It has 4 sides, shaped like a shield. Very tiny, It has 2 flat edges at the top and on the sides they are rounded slightly to the bottom point. It is smoothed to a convex in the center. It is pale pink/peach in color.

There is a G imprinted on one side, and SM above the number 10 on the other.

If anyone can help me to figure this out it will be a great service!
I've searched online and had no success.
Thanks for reading