? about Monet butterfly pin

[eclectic_seller_too]

Does anyone know how the color was applied to this pin? Has a bit of irridescense to it. Is it enamel, or something else?

[eclectic_seller_too]

Hmmmm...looking around the Internet, I wonder if this might be a moth, instead of a butterfly. Anyone know?

[eclectic_seller_too]

Never mind about the moth question. It's a butterfly.

[flipping_treasures]

I think that it might have been added later with nail polish.  JAWAG, but from what I can see, it looks like it could be.