Balfourodendron riedelianum of the family Rutaceae. Native to Brazil; other widely used common names include pau liso, guatambu, and ivory wood
There are at least 7 other species from 4 genera that also have the name ivorywood as all or part of one or more of their common names, so there is great possiblity for confusion with this wood. I cannot say with any confidence that all of the pics on this page are of Balfourodendron riedelianum
My thanks to Ron Greig for alerting me to the fact that ivory wood and guatambu are the same wood.
my samples:
a long veneer sheet (sold to me as "ivory wood") and a couple of closeups; color on the distance pic is quite accurate --- the closeups are just a little more washed out than the actual wood
web pics
planks
planks listed as guatambu / Balfourrodendron riedelianum
planks sold as guatambu
plank sold as ivorywood / Calycophyllum multiflorum
flooring sold under the name gautambu
quartersawn veneer sold under the name guatambu
veneer sold under the name guatambu
veneer listed as guatambu / Balfourrodendron riedelianum
veneer sold under the name "ivory wood"
veneer sold under the name pau liso
flooring listed as guatambu / Balfourrodendron riedelianum --- color is just silly