Sea Blue – Speedball underglaze no.1018 – 1068

Speedball’s Underglazes offer artists spectacular results that burn consistently across most of the color gamut, and are unmatched in vibrancy and value. Originally formulated to perform in a wide firing range, 05-6, Speedball’s Underglazes have been successfully fired on Cone 10. Suitable for use on green earthenware or bisque, each color produces a softer, velvety finish when left unglazed, and becomes more intense in richness when covered with a translucent glaze*. Trusted by some of today’s most famous and acclaimed ceramic artists. All colors are safe for dinnerware if used and fired as indicated, are lead-free and carry the AP Seal. Select below to see the full range of colors, including 12 NEW colors! *For best results use Speedball Clear Earthenware or Stoneware Clear Glaze with Speedball Underglazes. Speedball recommends making test tiles to match the artist’s clay body and firing schedule.