Outstanding Sam. That is a really nice piece of work.
If I made it I would guess veneer but you, I would say more in the order of segmented turning. Am I right? If so I guess most blocks would have to be accurately assembled first in two colours.
However you did it I’ll bet you loved the Pacific Ocean……. :-)
Again, really, really nice.

The early bird gets the worm but its the second mouse that gets the cheese.