The bowl is Wellingtonia as it is known in the UK, giant redwood in its native home (sequoiadendron giganteum for those that speak latin!). Although not native to the UK, these trees can be found growing in many parts of the country.
The bowl was textured by removing the soft wood between the growth rings, sandblasting and and finished with a white wood stain. Approximate size is 12" diameter.
A friend borrowed the bowl for a photography project and this is the result!