Cameo

    Cameo hat/stick pin that is signed JHP on the stem  

Can anyone tell me anything about this cameo?

 What it is made of?  how can i tell what it is made of?  how common are they?

I read about checking it with light, i have added photo's of the light test.  Absolutely Beautiful....

Of course i dont know anything about the light testing, but i loved how it looks.  It looks very clear to me.

 I have searched the internet for over a year looking for any kind of a match.  nothing .

Good