Royal Mojave Agate 939a  :  An example of the same stone over a bar code showing the translucency.  Several pieces exhibit a dual refraction like Calcite making one line appear as 2.
Royal Mojave Agate 939a : An example of the same stone over a bar code showing the translucency. Several pieces exhibit a dual refraction like Calcite making one line appear as 2.
62mm x 30mm