This insulator somehow defies physics having that huge thumbnail sized ~thick~ rock inside the domeside right at the surface without breaking or even cracking the insulator! Stone is big, white and lumpy like a big ol white summertime cloud and displays perfectly! Insulators condition is excellent, little wiregroove rubbing, a tad of haze and one very tiny blemish on the resting edge of the base from a small stone in the glass. Displays great! $60 delivered.