smalt
/smɔlt/
noun
- A deep blue glass or pigment made by melting cobalt oxide with silica, used in paints and ceramics.
- Smalt was a popular pigment before the invention of synthetic ultramarine.
- Artists in the 17th century often used smalt to create vibrant blue skies in their paintings.
- The antique vase was decorated with smalt, giving it a rich blue color.