Cone 6 oxidation (first image): Sparkle Black Engobe fires matte black with metallic specks. Specks may produce texture. Highly stable.  

Cone 10 reduction (second image): No change to base colour. Specks bloom and become matte. Remains stable.  

Tips:

• To enhance the sparkle and improve texture, use your fingers to burnish/polish the surface of the ware before the last layer is dry. Polishing is not needed when used in combination.
• Can be applied to wet clay, greenware or soft fired, cone 04 bisque.
• Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica.
• Fires matte. Apply clear glaze (SW004) Zinc-Free Clear to intensify colour or for use on dinnerware. 
• SW004 Zinc-Free Clear is recommended for a black finish. SW001 Stoneware Clear will change the colour to a rich brown and affect the sparkle.
• Engobes will impact glaze results when used as a base. Engobes are used to change the colour of your clay colour surface without cross contamination and easy clean up in your studio. 
• Can be used in oxidation or reduction firings. Results may vary.
• The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.