Crossword clues for the word: NIELLO The word NIELLO has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for NIELLO Showing 1 to 12 of 12 results Clue(s) Black alloy, cool, turned yellow when exposed Black alloy. Black metallic alloy Clarifier's words Decorated metal work. Decoration on metal Enamel-like alloy Engraving that is inspired by last of Jackson Pollock's three pivotal pieces Inlayer's sulfur alloy Metal inlay Ornamental alloy Ornamental metalwork