Mason Stain #6666 Cobalt-Free Black – Quarter Pound
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Mason Stain #6666 Cobalt-Free Black – Quarter Pound
Mason Stain #6666 Cobalt-Free Black is a ceramic stain from Mason Color Works for coloring glazes, slips, underglazes and clay bodies. Sold by the quarter pound.
Stain details
- Mason number: 6666
- Also referenced as: K-4266
- Color family: Black
- Composition: Chromium (Cr), Iron (Fe), Manganese (Mn)
- Max. firing temperature: 2300°F / 1260°C (about cone 9)
- Zinc: Do not use zinc in the glaze.
New to stains? See how much Mason stain to use in glazes and slip and our Mason Stains FAQ. Firing temperatures are a rough guide: firing cycle, atmosphere and cooling rate all affect the final color.
Quantity discounts & free shipping
Price shown is for one quarter pound. Discounts are applied automatically:
- 1 lb or more (4–19 units): save 33%
- 5 lb or more (20+ units): save 44%
All quantities of a color ship together in a single bag, and all Mason Stains ship free. Sheffield Pottery stocks one of the most complete Mason inventories, including blended colors most Mason distributors no longer carry.
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