Gold alloys
22k Gold
22 karats, 916ÔÇ░
Rich, deep yellow, very close to pure gold in tone, slightly warmer than 18k
Composition
91.6% gold, typically 5ÔÇô6% silver, 2ÔÇô3% copper (Indian/Middle Eastern standard)
Physical properties
| Density | 17.70 g/cm³ | Weight per unit volume. Platinum is ~40% heavier than 18k gold at equal size |
|---|---|---|
| Melting range | 890–940 °C | Working temperature for alloys. Pure metals have a sharp melting point |
| Vickers hardness | 60 HV | Higher HV = greater scratch resistance in service |
| Mohs hardness | 2.5 | Approximate equivalent for comparative reference |
| Tensile strength | 275 MPa | Resistance to breaking under tension, relevant for prongs and fine settings |
| Purity | 91.60% | Fine metal content by mass |
| Tarnish resistance | Excellent | Surface oxidation / sulphidation under typical wear conditions |
| Workability | Good | Ease of forming, soldering, and fabricating under standard jewellery workshop conditions |
| Hypoallergenic | Hypoallergenic | Likelihood of triggering skin reactions under normal wear |
Common uses
Indian and Middle Eastern bridal jewellery, high-karat decorative pieces, traditional goldsmith work, coin jewellery
Hallmarking & identification
Stamped 916 in most markets. Dominant karat for traditional jewellery in South Asia, the Gulf, and Southeast Asia.
Care & maintenance
Relatively soft compared to lower-karat alloys. Store separately. Clean with mild soap and water. Avoid exposure to chemicals.
Market & pricing
Priced close to fine gold; premium for craftsmanship varies widely by market.