What is Oxidized Silver?

Oxidized (Thai) Silver is 925 silver surface-treated with sulfide to form a black silver sulfide (Ag₂S) layer. Raised areas are polished bright while recesses stay dark, creating a vintage contrast.

The Chemistry

Silver reacts with sulfur compounds: 4Ag + 2H₂S + O₂ → 2Ag₂S (black). This happens naturally—that's why silver tarnishes. Oxidized silver intentionally accelerates and controls this process.

Process

1. Polished silver dipped in potassium sulfide solution (seconds to minutes)
2. Even black Ag₂S film forms
3. Raised details brushed/polished bright
4. Recesses remain black for vintage contrast
5. Optional clear lacquer seal

Market Trend

Oxidized silver has trended strongly in 2024–2026: stackable rings, dark-style pendants, vintage earrings. Target demographic: ages 18–35 seeking individuality. Retail price premium: 20–30% over bright-finish silver.

Browse our oxidized collection or inquire about custom orders.