| Rating | Solver | Clue |
|---|---|---|
| SMALT | Blue pigment | |
| ULTRAMARINE | Blue pigment | |
| COBALT | Blue pigment | |
| AZURE | The clear blue color of the sky; also, a pigment or dye of this color. | |
| BISE | A pale blue pigment, prepared from the native blue carbonate of copper, or from smalt; -- called also blue bice. | |
| XYLINDEIN | A green or blue pigment produced by Peziza in certain kinds of decayed wood, as the beech, oak, birch, etc., and extracted as an amorphous powder resembling indigo. | |
| ZAFFER | ... painting, and in enameling pottery, to produce a blue color, and is often confounded with smalt, from which, however, it is distinct, as it con... | |