PURE SULFUR POWDER 8 ozs

• Precious Metal Refining and Smelting. Refiners add elemental sulfur powder as a flux during smelting to separate silver from gold. The sulfur reacts with molten silver and base metals to form a sulfide slag that floats to the top, leaving purer gold behind.

• Making Niello Inlay. Jewelers melt pure sulfur powder with silver, copper, and lead (or bismuth) to create niello, a jet-black metallic sulfide alloy. Once cooled and ground into a paste, niello is fused into engraved recesses on silver or gold to create durable, high-contrast black designs.

• DIY Patina Mixtures. While most jewelers buy pre-made liver of sulfur (potassium sulfide) to darken silver and copper, pure sulfur powder can be boiled with potassium hydroxide or lye to manufacture homemade oxidizing solutions.

• Fume Patination. Heating small amounts of pure sulfur powder in a closed chamber generates sulfur vapors that slowly tarnish and add antique color to silver and copper pieces without submerging them in liquid.