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Brand New 925 Sterling Silver Chain 20" N925-172
- Product Code: N925-172
- Availability: 2-3 Days
£20.00
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Certified & Hallmarked
Established Jeweller
Brand New 925 Sterling Silver Chain 20" N925-172
This brand new 20-inch sterling silver chain represents the pinnacle of contemporary metallurgical standards. Specifically chosen for its balance of linear elegance and structural durability, this 9.1-gram asset is fully hallmarked to guarantee 92.5% silver purity, offering a versatile foundation for both daily wear and formal coordination.
Net Mass
9.10g
Precision Weighted
Alloy Grade
925 Silver
Assayed Purity
Linear Span
20 Inches
Standard Fit
Reference
N925-172
Stock Identifier
Verification
Hallmarked
UK Assay Office
Technical 7-Table Framework for Silver Assets
1. Metallurgical Composition & Purity Standards
| Material Classification | Silver % | Hallmark Requirement | Durability Rating |
|---|---|---|---|
| 925 Sterling Silver | 92.5% Pure Silver | Mandatory (UK Assay) | High (Industrial Standard) |
| Silver Plated | <1% Coating | None (Base Metal) | Low (Wear Prone) |
| Fine Silver | 99.9% Pure Silver | Optional | Low (Too Soft for Chains) |
Table 1 Analysis: This chain is manufactured from authentic 925 Sterling Silver. The 7.5% copper alloy component provides the necessary hardness to prevent the 20-inch span from deforming under the weight of a new gold pendant or heavy silver charm.
2. Link Geometry & Dimensional Precision
| Metric | Dimension | Tolerance | Functional Benefit |
|---|---|---|---|
| Link Width | 2.6 mm | +/- 0.1 mm | Refined yet visible profile |
| Link Depth | 2.6 mm | Uniform | Maximum light refraction |
| Total Length | 50.8 cm (20") | Verified | Ideal mid-sternum placement |
Table 2 Analysis: The 2.6mm gauge offers a robust cross-section. Unlike mass-market new silver chains that may be hollowed out to save costs, this solid construction ensures a consistent 9.1g weight for superior drape and longevity.
3. Fastening & Security Engineering
| Component | Material | Mechanism | Audit Status |
|---|---|---|---|
| Primary Clasp | Solid 925 Silver | Spring-Loaded Bolt | 20-Cycle Snap Tested |
| Jump Ring | 925 Silver | Seamless Solder | Gap-Free Verification |
| Hallmark Stamp | Official Punch | Laser/Deep Struck | Verified for Legitimacy |
Table 3 Analysis: Security is paramount for a 20-inch asset. Our technical audit confirms that the clasp spring tension is optimal, preventing accidental detachment during active movement. The soldered jump rings ensure the chain cannot be pulled apart at its weakest point.
4. Environmental Resistance & Care Matrix
| External Factor | Effect on 925 Silver | Mitigation Protocol |
|---|---|---|
| Chlorine/Pools | Structural Embrittlement | Complete Removal Recommended |
| Atmospheric Sulfur | Silver Sulfide (Tarnish) | Regular Micro-Fibre Polishing |
| Skin Acidity | Surface Dimming | Fresh Water Rinse & Dry |
Table 4 Analysis: While brand new, sterling silver is reactive to Devon's maritime air. We recommend a regular cleaning cycle to maintain the high-polished finish, ensuring the 9.1g of silver retains its "specular" reflection over decades of use.
5. Ergonomic Drape & Comfort Metrics
| Body Placement | Movement Profile | Friction Rating | Comfort Class |
|---|---|---|---|
| Mid-Sternum | High Mobility | Low (Polished Finish) | Premium |
Table 5 Analysis: The 20-inch length provides an "unrestricted" fit for most adults. At 9.1g, the chain has enough mass to sit flush against clothing or skin without twisting, a common failure in lightweight sub-5g chains.
6. Regulatory & Legal Purity Benchmarks
| Legal Requirement | Standard | Product Status |
|---|---|---|
| UK Hallmarking Act 1973 | Mandatory for >7.78g Silver | Compliant |
| Fineness Mark | 925 Crown/Scale Symbol | Verified |
| Assay Office Mark | Regional Identifier | Verified |
Table 6 Analysis: Because this chain exceeds the 7.78g threshold, a full UK hallmark is legally required. This provides an independent guarantee of quality that a simple "925" stamp (which can be applied by anyone) does not offer. This standard is upheld across our entire new silver bracelets and neckwear collection.
7. Supply Chain & Asset Integrity
| Metric | H.E. Phillips Ltd Standard | Commercial Competitors |
|---|---|---|
| Sourcing | Direct Laboratory Verified | Mass Imported Unverified |
| Final Inspection | Workshop Bench Tested | Warehouse Automated Only |
| Post-Sale Support | Full Totnes Workshop Access | Third-Party Outsourcing |
Table 7 Analysis: Established in August 2000 at 19 Fore Street, we provide a level of technical accountability that digital-only retailers cannot match. Each chain is hand-checked by a specialist to ensure no factory defects are present in the link articulation.
20 Technical FAQs: Engineering & Asset Management
Purity & Metallurgical Integrity
1. What exactly constitutes "Brand New" in this context?
This item is sourced directly from our primary manufacturing partners and has never been previously owned or worn. It arrives in factory-polished condition and undergoes a final inspection at our Totnes workshop to ensure it meets our "Vault Grade" standards before being listed for sale.
2. Is the "925" stamp sufficient for purity verification?
No. A "925" stamp is a manufacturer's mark and can be applied to any metal. This chain features a full UK Hallmark, which is a statutory requirement for silver over 7.78g. It represents an independent third-party assay test confirming the metal is indeed 92.5% pure silver.
3. Why is copper added to the silver alloy?
Pure silver (99.9%) is physically too soft for link-based jewelry; it would stretch and break under minimal tension. The 7.5% copper addition creates a solid-solution alloy that increases the material's Vickers hardness, making it suitable for the 9.1g weight of this 20" chain.
4. Can this chain cause skin irritation or allergic reactions?
Our 925 sterling silver is nickel-free. Most silver allergies are actually reactions to nickel or other base metals found in cheaper plated jewelry. As a brand new, high-purity item, this chain is hypoallergenic and safe for sensitive skin types.
Structural & Mechanical Specifications
5. What is the significance of the 9.1g weight for a 20" length?
Linear density (mass per inch) is a key indicator of durability. At 9.1g, this chain offers approximately 0.45g per inch. This is a "mid-weight" specification, providing enough strength for a new gold ring or pendant to be worn as a charm without causing the links to "thin out."
6. How is the 2.6mm width measured?
Width is measured at the widest part of the link using digital calipers. A 2.6mm width is considered a versatile "unisex" gauge—thick enough to be worn alone as a statement piece, yet narrow enough to fit through the bale of most standard pendants.
7. Is the clasp mechanism replaceable?
Yes. The bolt ring clasp is a modular component. Should the internal steel spring ever fatigue after years of use, our Totnes workshop can replace it with an identical 925-stamped component, maintaining the chain's overall value and integrity.
8. Are the links "Soldered" or "Open"?
Every link in this chain is fully closed and soldered. "Open" links are common in budget jewelry and are a primary cause of loss. Our brand new stock is audited to ensure every link junction is thermally fused for maximum tensile strength.
Environmental Performance & Maintenance
9. How does maritime air in Devon affect brand new silver?
Coastal air contains higher levels of salt and moisture, which act as catalysts for oxidation. Because this is a brand new item, the polished surface is at its most resistant; however, regular wiping with a treated cloth is recommended to prevent the buildup of silver sulfide.
10. Can I wear this chain while exercising?
While the 9.1g weight is durable, sweat contains salts and acids that can dull the finish. We recommend removing the chain during high-intensity exercise to preserve the factory polish and prevent mechanical stress on the clasp.
11. How should I store the chain to prevent tangling?
When not in use, the 20-inch chain should be fastened and stored flat or hung vertically. Storing it in a dedicated jewelry pouch also limits exposure to oxygen, which is the primary cause of tarnish in sterling silver assets.
12. Is ultrasonic cleaning safe for this chain?
Yes. As a solid 925 silver item without gemstones, this chain is perfectly suited for ultrasonic cleaning. This process uses high-frequency sound waves to remove micro-debris from inside the link pivots, which traditional cloth polishing cannot reach.
Valuation & Acquisition Intelligence
13. Does brand new silver hold its value as well as gold?
Silver is an industrial and precious metal. While it has higher price volatility than gold, a 9.1g hallmarked chain has a "melt value" floor. By purchasing a hallmarked item from a reputable source like H.E. Phillips Ltd, you are acquiring a tangible asset with verifiable metal content.
14. Why buy from a physical store in Totnes rather than online-only?
Physical accountability is vital in the jewelry trade. At 19 Fore Street, you can verify the weight and hallmark in person. We have operated here since August 2000, providing a permanent location for aftercare, resizing, or cleaning that online marketplaces cannot offer.
15. What is your return policy for brand new chains?
We offer a full refund policy in the event of any technical error or description mismatch. Our goal is transparency; we provide the exact weight (9.1g) and length (20") so you can make an informed decision before purchase.
16. Can I trade in old silver towards this purchase?
Absolutely. We offer a professional sell gold or sell silver service. We can evaluate your unwanted items based on current market spot prices and apply that value toward your brand new sterling silver chain.
Styling & Expert Coordination
17. Is the 20-inch length suitable for layering?
Yes. The 20-inch length is the most popular "middle" tier for layering. It sits perfectly below a 16 or 18-inch second-hand silver chain, allowing you to create a textured, tiered look with multiple gauges.
18. How does this chain pair with modern watches?
The "cool" tone of 925 silver is an ideal match for stainless steel timepieces. We recommend pairing this chain with a watch from our Casio or Citizen Eco-Drive ranges for a cohesive, professional aesthetic.
19. Can men wear a 2.6mm 20-inch chain?
Certainly. The 20-inch length is a standard "base" length for men's neckwear, typically sitting just below the collarbone. The 2.6mm width provides a masculine, understated presence that is visible without being overly bulky.
20. How do I verify the authenticity of this item myself?
Upon receipt, you can use a 10x jeweler's loupe to inspect the hallmark near the clasp. You will see the "925" fineness mark and the assay office symbol. You may also weigh the item on a calibrated digital scale to confirm the 9.1g mass as specified.
© 2026 H.E. Phillips Ltd - Your Official Authorised Fine Jewellery Specialist. All Technical Data verified for forensic accuracy.
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