The colors are made of artificial mineral pigments.
There are 12 colors and come in four numbers of particle sizes, #8, #10, #12 and #Byaku (the finest).
Every color are 10g.
The finer pigments labeled larger numbers and the colors are lighter.
●The set includes●
Iwaaka※(Akakuchi-Honshu), Iwadaidai※(Kikuchi-Honshu), Iwaki,Oudo, Iwataisha, Uguisu, Kurorokusho, Bigunjo, Gunroku, Gunjo,Iwanezu, Iwaguro
The pigments with ※ has the colors within brackets instead of #byaku.