Obsidian (Amaco C‑1) is a deep, glassy black glaze that enhances form and surface with rich clarity. Smooth and semi-transparent, it creates a sleek, modern look on porcelain and stoneware bodies, especially when layered over carvings or texture. For potters who love bold finishes with depth and shine, this one delivers.
Fires to Cone 5/6 in oxidation
Food‑safe, ASTM D‑4236 compliant
Pairs beautifully with other Celadon or Potter’s Choice glazes for layered dimension
