There is provided a cerium-based abrasive containing cerium oxide as a main
component, in which the abrasive particles composing the abrasive are coated with
a coating layer containing at least either one of a silicon component of silicon
or a silicon compound and an aluminum component of aluminum or an aluminum compound.
The cerium-based abrasive can be produced by wet-dispersing the cerium-based abrasive
in a dispersion medium to obtain a slurry and carrying out surface treatment by
adding a treatment solution containing at least either one of the silicon compound
and the aluminum compound to the slurry. Further, the cerium-based abrasive can
be produced by carrying out surface treatment by adding a treatment solution containing
at least either one of the silicon compound and the aluminum compound to the slurry
during the pulverization step or after the pulverization step in the conventional
cerium-based abrasive production process and after that roasting and classifying
the obtained cerium-based abrasive.