A Zaisha guide to understanding silver purity, durability, and where 18K gold PVD-plated stainless steel fits into the picture.
If you've ever shopped for silver jewellery, you've probably seen two terms used almost interchangeably: pure silver and 925 sterling silver. They may sound similar, but they are different in terms of purity, strength, durability, and everyday wear.
Pure silver contains 99.9% silver, while 925 sterling silver contains 92.5% silver and 7.5% alloy metals, usually copper. This difference in composition affects how each type of silver performs over time.
At Zaisha, we often get questions about silver jewellery and everyday durability. In this guide, we'll explain the difference between pure silver and 925 sterling silver and why Zaisha uses stainless steel with 18K gold PVD finishing for many of its jewellery designs.
What Is Pure Silver?
Pure silver, also known as fine silver, contains 99.9% silver and is commonly identified by a .999 hallmark. It has a bright, white appearance and a naturally high shine.
However, high purity also makes pure silver relatively soft. It can bend, scratch, dent, or lose its shape more easily than silver alloys, making it less suitable for jewellery that needs to withstand frequent daily wear.
Pure Silver at a Glance
- Contains 99.9% silver
- Commonly marked with a .999 hallmark
- Has a bright, white lustre
- Is softer and more prone to scratches and dents
- May not be ideal for intricate everyday jewellery designs
- Can tarnish and requires proper care and storage
What Is 925 Sterling Silver?
925 sterling silver contains 92.5% pure silver and 7.5% other metals, most commonly copper. The number 925 refers to the percentage of pure silver in the alloy.
Adding alloy metals makes sterling silver considerably stronger than pure silver. This allows jewellers to create durable chains, rings, bracelets, earrings, detailed designs, and gemstone settings that are better suited to regular wear.
925 Sterling Silver at a Glance
- Contains 92.5% pure silver
- Contains approximately 7.5% alloy metals
- Commonly marked with a 925 hallmark
- Stronger and more durable than pure silver
- Suitable for a wide range of everyday jewellery designs
- Can tarnish over time and may require cleaning and polishing
925 Sterling Silver vs. Pure Silver: Side-by-Side
| Factor | Pure Silver (.999) | 925 Sterling Silver |
|---|---|---|
| Silver Content | 99.9% silver | 92.5% silver and 7.5% alloy metals |
| Hallmark | .999 | 925 |
| Durability | Soft and more prone to bending and scratching | Stronger and better at retaining its shape |
| Everyday Wear | Less suitable for frequent wear | Well suited to regular jewellery use |
| Tarnish | Can tarnish and requires care | Can tarnish over time and may require polishing |
| Best For | Collectible pieces, decorative items, and investment silver | Rings, chains, earrings, bracelets, and everyday jewellery |
The Problem Both Types of Silver Still Share
While 925 sterling silver is stronger than pure silver, neither type is completely resistant to tarnishing. Silver can react with substances in the surrounding environment, including moisture, air, sweat, cosmetics, and household chemicals.
Sterling silver also contains alloy metals such as copper. These metals can contribute to oxidation and discolouration over time, particularly when jewellery is exposed to moisture, sweat, or humidity.
With proper storage, cleaning, and maintenance, both pure silver and sterling silver can remain beautiful for years. However, people looking for low-maintenance jewellery may prefer materials designed specifically for everyday durability and resistance to corrosion.
Why Zaisha Uses Stainless Steel Instead of Silver
Zaisha takes a different approach to everyday jewellery by using stainless steel as the foundation for selected designs and combining it with 18K gold PVD finishing.
The Core: Stainless Steel
Stainless steel is valued for its strength and resistance to corrosion. Compared with softer metals, it can provide a durable foundation for jewellery designed for regular use.
Its strength also helps jewellery maintain its shape through everyday activities, making stainless steel a practical choice for contemporary jewellery designs.
The Finish: 18K Gold PVD
Physical Vapour Deposition, commonly known as PVD, is a vacuum-based coating process used to apply a durable finish to a metal surface.
For gold-toned jewellery, PVD technology can create a more durable finish than many conventional surface-plating methods. The result is a jewellery finish designed to better withstand everyday friction and exposure when cared for properly.
The Safety: Tested Materials
Material safety is an important consideration when choosing jewellery. Zaisha jewellery is designed with skin-conscious materials and is tested for restricted substances according to applicable safety standards.
For customers with sensitive skin, checking the material composition and testing information of any jewellery product is always recommended.
Our Promise: 1-Year Warranty
Zaisha offers a 1-year warranty on eligible jewellery pieces, giving customers additional confidence in the quality and durability of their purchase. Always check the product-specific warranty terms before buying.
Silver vs. Zaisha's Steel and Gold
| Factor | Pure Silver | 925 Sterling Silver | Zaisha Steel + 18K Gold |
|---|---|---|---|
| Base Strength | Soft | Moderate to strong | Strong stainless steel foundation |
| Tarnish Resistance | Requires care | Requires care and polishing | Designed for improved resistance to everyday wear and tarnishing |
| Skin Considerations | Generally well tolerated, but individual reactions can vary | Contains alloy metals that may not suit everyone | Uses skin-conscious materials and product-specific testing |
| Everyday Durability | Lower due to softness | Higher than pure silver | High, depending on design and care |
So, Which Should You Choose?
- Choose pure silver if: You value very high silver purity and are buying a piece that will be worn occasionally or carefully maintained.
- Choose 925 sterling silver if: You want genuine silver jewellery with better strength and durability than pure silver and are comfortable with regular cleaning and maintenance.
- Choose Zaisha if: You prefer gold-toned jewellery built on a durable stainless steel foundation with an 18K gold PVD finish and designed for everyday use.
Final Thoughts
The main difference between pure silver and 925 sterling silver comes down to purity and durability. Pure silver contains 99.9% silver but is relatively soft, while 925 sterling silver combines 92.5% silver with alloy metals to create a stronger and more practical material for jewellery.
Both types of silver can tarnish and require appropriate care. If your priority is everyday jewellery that combines a durable metal foundation with a gold-toned finish, stainless steel with 18K gold PVD is another option worth considering.
At Zaisha, our focus is on creating contemporary jewellery designed to fit naturally into everyday life, combining durable materials with modern finishes and thoughtful designs.
Frequently Asked Questions
Is 925 sterling silver real silver?
Yes. 925 sterling silver is genuine silver. The 925 mark indicates that the jewellery contains 92.5% pure silver, with the remaining 7.5% made up of other alloy metals, commonly copper.
Why does sterling silver turn skin green sometimes?
Green discolouration can occur when alloy metals, particularly copper, react with sweat, moisture, skin oils, cosmetics, or environmental conditions. The reaction varies from person to person and does not necessarily indicate that the jewellery is fake.
Does pure silver tarnish faster than sterling silver?
Both pure silver and sterling silver can tarnish. Tarnishing is a surface reaction that occurs when silver interacts with substances in the environment. Sterling silver contains copper and other alloy metals that can also oxidise, so both types benefit from proper storage and regular cleaning.
Which is more expensive, 925 sterling silver or pure silver?
Pure silver contains a higher percentage of silver, so its raw metal value per unit weight is generally higher. However, the final price of jewellery also depends on factors such as design, craftsmanship, brand, gemstones, finishing, and manufacturing.
Is Zaisha jewellery made of silver?
No. Zaisha's stainless steel jewellery is made using a stainless steel foundation and finished with an 18K gold PVD coating. This provides a different material and construction approach from both pure silver and 925 sterling silver.
Is Zaisha jewellery safe for sensitive skin?
Zaisha uses skin-conscious materials and tests applicable jewellery materials for restricted substances. However, individual skin sensitivities can vary, so customers with known metal allergies should review the material information for the specific product before purchase.
How long does Zaisha's 18K gold PVD plating last?
PVD finishes are designed to provide greater durability than many conventional plating methods, but longevity depends on factors such as wear, friction, exposure to chemicals, water, sweat, and care. Following Zaisha's care instructions can help maintain the finish for longer.