![Mason Stain 6388 Mazarene Blue](http://psh.ca/cdn/shop/products/SMEB1_0006fcc2-e5e8-4b27-a731-d907b5a5a0ba_{width}x.jpg?v=1625573661)
Mason® Stain 6388. Purplish powder that fires to familiar cobalt blue in glaze. Produces best results in zinc-free glazes up to 2300 F (1260C). Blend with a zircon opacifier to lighten or with CrSn crimson lilac etc. to produce purples or with chrome oxide or stain to produce blue greens. Composition - CoSi