Rashi on Numbers 11:7/רש"י על במדבר י״א:ז׳

1והמן כזרע גד AND THE MANNA WAS AS CORIANDER SEED — He who said that (the previous verse) did not say this: Israel said, “our eyes are only on this manna”, but the Holy One, blessed be He had it written in the Torah, and the manna was like coriander seed” — as much as to say “See, ye people of the world, about what My sons were complaining, whilst as a matter of fact the manna is excellent in so many different ways!” (Sifrei Bamidbar 88).

2כזרע גד i.e. it was round like גד, coriander-seed in O. F.

3הבדלח is the name of a precious stone. BEDELLIUM. (Some editions add the O. F. קרישטל crystal).