Cobalt blue

Ingredients

cobalt

Preparation Steps

Original Recipe Text

Blue pigment was applied above an opaque white glaze and then sealed beneath a final layer of transparent glaze (p. 39).

Evidence

"The report mentions Cobalt blue was sourced from Northern Hijaz and Oman... Blue pigment applied above the opaque glaze further sealed beneath a transparent glaze."

Remarks

This 'cobalt blue on white' ware was associated with Basra and later imitated in eastern regions using manganese purple as a substitute for blue (p. 39).