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Niello: the black that makes the engraving stand out

· 1 min read · Techniques

Illustration: Niello: the black that makes the engraving stand out

Niello is a black mixture of silver, copper and lead sulfides that is melted into lines engraved in the metal. After polishing, the design stays black against the shine of the silver.

Steps of the technique: Engrave, Prepare the niello, Fill, Heat, Cool, File and polish
Summary of the steps

How it is done #

  1. The design is engraved in the silver.
  2. The niello is melted into the grooves with gentle heat.
  3. It is cooled, the excess is cleaned off with file and sandpaper, and the piece is polished until the metal shines and the niello stays in the grooves.

History #

Known since Roman times and very popular in medieval Russia, Byzantium and Thailand.

Result #

A very strong contrast: deep black on silver. It is common in cutlery, boxes and silver jewelry.

Care #

Do not subject it to knocks or strong heat. Clean it with a cloth; abrasive polishes can damage the niello.

Step by step #

  1. Engrave. Make the design with deep grooves.
  2. Prepare the niello. Melt sulfur, silver, copper and lead, or use commercial powder.
  3. Fill. Cover the engraving with niello.
  4. Heat. Melt the niello until it fills.
  5. Cool. Let it harden.
  6. File and polish. Remove the excess until flush.

Tools and materials #

  • Gravers (engraving)
  • Niello powder
  • Small torch
  • Files and sandpaper

Common mistakes #

  • Shallow engraving: niello is lost when polishing.
  • Overheating and burning the silver.
  • Sulfur fumes without ventilation.
  • Not cooling before filing.

See also #

This entry was drafted with the help of AI and is pending review by the author.