Niello

Niello is a black mixture of copper, silver, and lead sulphides, used as an inlay on engraved metal.

Part of speech: noun
Definition: Niello technique entails the application of a black compound comprised primarily of copper, silver, and lead sulphides into the engraved or incised surfaces on metal, typically silver, to create contrasting ornamental designs. Once applied, the niello is fused to the base metal through heating before being polished, resulting in a distinctive black finish against the lustrous metal. This method, with origins tracing back to ancient times, has been revered for its ability to produce detailed and durable decorative pieces. Niello, known for its resistance to wear, is particularly favored for creating jewelry, artistic objects, and functional items with intricate detailing and patterning, offering an aesthetically striking and enduring appeal.