pinfire: Magical Opal (Oculus Mundi)I have taken some more pictures and it can be seen that the opal acts like a humidity sensor and changes the transparency in dependence on the water content.
pinfire: Magical Opal (Oculus Mundi)I have taken some more pictures and it can be seen that the opal acts like a humidity sensor and changes the transparency in dependence on the water content.
pinfire: Magical Opal (Oculus Mundi)I have taken some more pictures and it can be seen that the opal acts like a humidity sensor and changes the transparency in dependence on the water content.
