As coriander — seed — Not for colour, for that is black, but for shape and figure. Bdellium — Is either the gum of a tree, of a white and bright colour, or rather a gem or precious stone, as the Hebrew doctors take it; and particularly a pearl wherewith the Manna manifestly agrees both in its colour, which is white, Exodus 16:14, and in its figure which is round.
Related Commentaries of Numbers 11:7
Numbers 11:7
7 And the manna was as coriander seed, and the colour thereof as the colour of bdellium.