Silver Purity Guide: Understanding 999, 925 Sterling, and Hallmarking
Learn to identify silver purity from 999 Fine to 925 Sterling. View our fineness chart and learn how to check BIS Hallmark (HUID) signs before buying.
Silver Purity Chart: Types and Common Uses
Silver purity is measured by 'Fineness,' representing parts per 1,000. While 999 is used for investment, 925 is the global standard for jewelry. Use the chart below to identify your silver type.
| Type | Fineness | Silver Content | Best Used For |
|---|---|---|---|
| Fine Silver | 999 | 99.9% | Investment coins, bars, and Pooja articles. |
| Britannia Silver | 958 | 95.8% | High-end tableware and older British coins. |
| Sterling Silver | 925 | 92.5% | High-quality jewelry, rings, and cutlery. |
| Jewelry Silver | 900 | 90.0% | Traditional Indian 'Coin Silver' jewelry. |
| German Silver | 0 | 0% | Warning: Contains NO silver (Nickel/Zinc/Copper). |
999 Fine vs 925 Sterling: Which One to Choose?
Depending on whether you are buying for investment or fashion, the purity level matters significantly.
- 999 Fine Silver (99.9% Pure): This is the purest form available. It is highly lustrous but very soft. It is not suitable for jewelry as it bends easily. Best for long-term investment or religious ceremonies.
- 925 Sterling Silver (92.5% Pure): To make silver durable, 7.5% copper or other alloys are added. This '925' mark is the standard for high-quality jewelry. It offers the perfect balance of beauty and strength.
- The 'German Silver' Trap: Be careful! German Silver (or Nickel Silver) contains zero percent silver. It is an alloy of copper, nickel, and zinc made to look like silver. Always check for a hallmark to avoid being overcharged for base metals.
Mandatory Silver Hallmarking (HUID) in India
As of late 2025, the Bureau of Indian Standards (BIS) has made HUID-based hallmarking mandatory for silver jewelry and artifacts to ensure consumer protection.
Three signs to check on every silver item:
- BIS Logo: The triangular mark of the Bureau of Indian Standards.
- Purity Grade: Look for numbers like 999, 925, or 800 stamped clearly.
- 6-Digit HUID: A unique alphanumeric code you can verify on the BIS Care App.
Calculating the Final Price of Silver
Unlike gold, silver pricing includes specific GST slabs for making charges:
- Metal Value: (Current Silver Rate × Weight).
- GST on Metal: 3% GST is applied to the base value of the silver.
- Making Charges: Labor costs which vary by design (usually 5-15% for jewelry).
- GST on Making: A separate 5% GST is applied only to the making charges portion.
Frequently Asked Questions about Silver Purity
What is the best silver purity for jewelry?
925 Sterling Silver is the best for jewelry. It is 92.5% pure and strong enough for daily wear, unlike 999 silver which is too soft.
Does pure silver turn black?
Yes. Tarnish is a natural reaction to sulfur in the air. It does not mean your silver is fake; it can be easily cleaned with a polishing cloth.
How can I verify silver at home?
Use a strong magnet; pure silver is not magnetic. You can also try the ice cube test; silver is a great thermal conductor and will melt ice very quickly.
Is 900 silver considered real silver?
Yes, it is known as 'Coin Silver' and contains 90% pure silver. It was common in older Indian jewelry and coins.