Crater is a medium sized focal element in copper, brass and nickel that has small crystals into its center. Unique in design, it measures 60 x 46 mm approx. no counting bail.
The bail can be removed to allow you to add one of your choice or thread into leather or textiles.
https://metalpearlsfireandstoneblog.wordpress.com/2022/01/07/destash-crater/