1 Oz Rainbow Dichroic Medium Frit Flakes on Black- 90 Coe &hellip; Genuine CBS Rainbow Coating on COE 90 Black Frit Coating process used by CBS will put a dichroic finish on up to 80% of the surface area of each particle Use to add sparkle and interest in fused jewelry 1 oz tube of frit. This frit is made with medium sized particles