1. Plural of niello; a black metallic alloy of sulfur, copper, silver, and lead used to fill engraved designs on metal surfaces for decorative effect.
Usage: technical; art and metalwork
2. Decorative objects or artwork produced using the niello technique.
Usage: art history

Examples

• The museum displayed a collection of medieval niellos featuring intricate silver inlays.
• Renaissance craftsmen created stunning niellos by carefully applying the black alloy to engraved metal surfaces.
• The jewelry maker specialized in niellos, a technique that dates back centuries.
• Ancient Roman niellos have been discovered in archaeological excavations across Europe.
• The artist's niellos showcased remarkable detail and contrast between the dark alloy and polished metal.