Blue Oregon Opal earrings

How unusual are these earrings? These are blue opals from Oregon.. Not the normal opal you normally think of when you think Opal, but that's what they are.

This opal stone was originally found in Owyhee, Oregon which gives the stone it's colour. Often appearing in sky blue or light blue hues, the stone comes in translucent finishes and can be ground to a fine polish. 

I've hung the stones on three different earwires so please specify which ones you would like.