Complex Double Skull Springs Egg

A very pretty double thunderegg - or rather a thunderegg with a couple of tiny little parasite eggs (or 'Thunderbuds') attached to it (on the left). Interestingly, the main egg has classic skull springs wavy agate, but the largest thunderbud is almost pure opal.

Size: 3" x 2 5/8" x 1 3/8"