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Brand New 925 Sterling Silver Chain 18" 10.78g N925-145
- Product Code: N925-145
- Availability: 2-3 Days
£45.00
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Brand New 925 Sterling Silver Chain 18" 10.78g N925-145
This brand new 18-inch sterling silver link chain represents a perfect synthesis of modern manufacturing precision and timeless metallurgical standards. Fully assayed and officially hallmarked in the UK, this 10.78-gram specimen provides a verified 92.5% silver purity, offering both significant aesthetic appeal and long-term asset security for the discerning wearer.
Net Mass
10.78g
Precision Weight
Alloy Grade
925 Silver
UK Hallmarked
Linear Span
18 Inches
Princess Length
Reference
N925-145
Product SKU
Condition
Brand New
Pristine State
Technical 7-Table Framework for Silver Assets
1. Metallurgical Composition & Alloy Stability
| Material | Silver % | Specific Gravity | Oxidation Resistance | Application |
|---|---|---|---|---|
| 925 Sterling Silver | 92.5% | 10.49 g/cm³ | High (Standard) | Link Chain Construction |
| Silver Plated | <1.0% | Varies (Base Metal) | Low | Costume Jewelry |
| Fine Silver | 99.9% | 10.49 g/cm³ | High | Investment Bullion |
Table 1 Analysis: This chain is comprised of solid 925 sterling silver, the global standard for high-quality jewelry. By combining 92.5% pure silver with 7.5% copper, the alloy achieves the necessary hardness for daily wear without compromising the characteristic white brilliance of precious silver.
2. Dimensional Geometry
| Dimension | Measurement | Tolerance | Impact |
|---|---|---|---|
| Width | 5.5 mm | +/- 0.1mm | Visual Substantiality |
| Depth | 1.7 mm | +/- 0.1mm | Structural Integrity |
| Length | 18 Inches | Standard | Versatile Drape |
Table 2 Analysis: A width of 5.5mm categorizes this as a mid-to-heavyweight link chain. Unlike mass-market new silver chains that often feature hollow cores, this 10.78g mass indicates a dense, high-quality build.
3. Mechanical Clasp Verification
| Component | Type | Spring Action | Security Level |
|---|---|---|---|
| Clasp Mechanism | High-Retention Link | Verified Tension | Professional Grade |
| Attachment Point | Jump Ring | Soldered Closure | Maximum Security |
Table 3 Analysis: The mechanical integrity of the clasp is paramount. This chain features a robust fastening system that has been tested for spring fatigue, ensuring that the 10.78g weight is securely retained during active movement.
4. Hallmarking & Compliance Matrix
| Requirement | Status | Verification Authority | Legal Standing |
|---|---|---|---|
| Assay Office Check | Passed | UK Assay Office | Mandatory for >7.78g |
| Purity Mark | 925 Stamped | Independent Auditor | Guaranteed Fineness |
Table 4 Analysis: In the UK, any silver item over 7.78g must be hallmarked by law. At 10.78g, this chain has been officially tested and stamped, distinguishing it from unverified "925 stamped" imports that may not meet actual purity standards.
5. Ergonomic Drape Analysis
| Metric | Ratio | Sensation | Best Use Case |
|---|---|---|---|
| Grams per Inch | 0.60g / inch | Reassuring Weight | Standalone or Pendant |
| Flexibility | Full 360° Axial | Smooth Contact | Daily Wear |
Table 5 Analysis: The 18-inch princess length is designed to sit gracefully on the collarbone. The linear density of 0.60g per inch provides enough "drop" to support a second-hand silver pendant charm without the chain kinking or distorting.
6. Environmental Resistance Data
| Factor | Risk | 925 Performance | Maintenance |
|---|---|---|---|
| Sulfurization | Tarnish | Predictable | Micro-fiber Polish |
| Mechanical Friction | Link Wear | High Resistance | Annual Inspection |
Table 6 Analysis: While all sterling silver reacts to sulfur in the air, the brand-new finish of this item has been polished to a mirror shine, providing a smooth surface that resists the initial stages of oxidation better than porous, lower-quality alloys.
7. Service & Accountability Benchmarks
| Metric | H.E. Phillips Ltd | Standard Retailers |
|---|---|---|
| Verification | Physical Workshop Audit | Drop-ship/Warehouse |
| Establishment | Since August 2000 | Variable |
| Expertise | Devon-based Specialists | General Sales Staff |
Table 7 Analysis: Buying from H.E. Phillips Ltd ensures that your brand-new chain has been physically inspected by experts at 19 Fore Street, Totnes, ensuring that the 10.78g weight and 925 hallmark are 100% accurate.
20 Technical FAQs: Engineering & Asset Management
Metallurgical Integrity
1. What exactly does the "925" hallmark verify?
The "925" mark is a technical guarantee that the item contains 925 parts of pure silver for every 1000 parts of material. The remaining 75 parts are typically copper, which is added to increase the Vickers hardness of the silver, making it durable enough for use in intricate link chains like the N925-145.
2. Is 10.78g considered a heavy weight for an 18" chain?
In the hierarchy of silver chains, 10.78g is classified as a substantial mid-weight. Many high-street chains of the same length weigh under 5g. The double-digit gram weight of this piece indicates a solid link structure, providing better tensile strength and a more premium tactile feel on the skin.
3. Does "Brand New" mean it has been refurbished?
No. "Brand New" indicates that this chain is a newly manufactured item in pristine, unworn condition. It has not been previously owned or refurbished. It arrives with its factory-spec finish intact, ensuring the highest level of specular reflection (shine) and mechanical "crispness" in the link movement.
4. Can the silver purity be verified independently?
Yes. Because this chain exceeds the 7.78g threshold, it carries a UK Hallmark. This is an independent verification from a government-regulated Assay Office. You can use a jeweler’s loupe to inspect the marks, which serve as a permanent, legal record of the metal's fineness and origin.
Structural & Mechanical Engineering
5. How does the 5.5mm width affect daily wear?
A 5.5mm width provides a bold visual profile while remaining comfortable for 24/7 wear. This width ensures the chain does not easily tangle or "knot," a common issue with thinner gauges. It is wide enough to be worn as a statement piece solo but still fits through most standard pendant bails.
6. What is the significance of the 1.7mm depth?
The depth (thickness) of the link determines the "crush resistance." At 1.7mm, these links are solid rather than flat-stamped. This depth ensures that the chain maintains its shape even if subjected to external pressure, preventing the "pinched link" look often seen in lower-grade jewelry.
7. Are the jump rings on this chain soldered?
Yes. At H.E. Phillips Ltd, we ensure that the terminal jump rings—the points connecting the chain to the clasp—are fully soldered. This creates a continuous loop of silver that cannot be pulled open under normal tension, providing maximum security for your investment.
8. What clasp mechanism is used for a 10.78g load?
This chain utilizes a high-quality spring-loaded clasp designed to handle the kinetic energy of a 10g+ asset. The internal spring is made of stainless steel for longevity, as pure silver would be too soft for the spring mechanism, ensuring the clasp remains tight and secure for years.
Environmental Care & Maintenance
9. Why does silver tarnish, and can it be prevented?
Tarnish is a natural chemical reaction between silver and sulfur compounds in the air (forming silver sulfide). It is not a defect but a proof of purity. You can minimize this by storing the chain in an airtight container and avoiding exposure to household chemicals, perfumes, and chlorinated water.
10. Is this chain safe for those with skin sensitivities?
925 Sterling Silver is generally considered hypoallergenic. Most skin reactions are caused by nickel, which is not present in our high-quality 925 alloy. As a brand-new item, it is free from contaminants, making it safe for the vast majority of wearers with sensitive skin.
11. How should I clean a brand-new silver chain?
To maintain the factory shine, use a dual-layer silver polishing cloth. The inner layer is treated with cleaning agents to remove microscopic oxidation, while the outer layer buffs the metal to a high luster. Avoid abrasive "silver dips" which can eventually pit the surface of the metal.
12. Can this chain be worn in the shower?
While fresh water won't damage 925 silver, soap residues and chemicals in tap water can accelerate tarnish and dull the mirror finish. For a brand-new asset like the N925-145, we recommend removing it before bathing to preserve its original "showroom" brilliance for as long as possible.
Investment & Provenance
13. Does silver hold its value as well as gold?
Silver is a precious commodity with intrinsic melt value. While the market price fluctuates, a hallmarked 10.78g chain will always have a baseline value based on its weight. High-quality pieces like this also carry "craftsmanship value," making them more liquid than unbranded, unverified silver.
14. Why buy brand new over a second-hand silver chain?
A second-hand silver chain offers vintage charm, but "Brand New" ensures zero mechanical wear. There is no link-thinning or spring fatigue in the clasp, meaning you are the first person to put tension on the metal, maximizing the lifespan of the piece.
15. Is H.E. Phillips Ltd an authorized dealer?
Yes. We have been operating as a physical jewelry specialist in Totnes since August 2000. Every brand-new item we sell is sourced through reputable, verified channels and undergoes a strict in-house quality control check before being offered to our clients.
16. What documentation comes with this silver purchase?
Your purchase is backed by a professional invoice from H.E. Phillips Ltd, detailing the SKU (N925-145), weight (10.78g), and material (925 Sterling Silver). This document, combined with the physical hallmark on the chain, serves as your proof of authenticity for insurance or future resale.
Style & Coordination
17. Can I pair this chain with a luxury watch?
Absolutely. Silver's neutral "cool" tone makes it an excellent companion for stainless steel timepieces. It pairs exceptionally well with our range of Casio or Citizen Eco-Drive watches, creating a cohesive, professional aesthetic.
18. Is 18 inches a unisex length?
18 inches is a standard "Princess" length for women, typically sitting just below the throat. For men, it is a shorter "choker" style fit. We recommend measuring your neck with a piece of string to visualize exactly where a 10.78g weight will hang on your frame.
19. Does this chain support heavy pendants?
Yes. The 10.78g solid construction is engineered to support substantial weight. It is a perfect match for a new gold pendant (if mixing metals) or a large silver locket, as the links will not stretch or deform under a reasonable load.
20. Can I trade in old jewelry for this new chain?
We offer a comprehensive sell gold or sell silver service. You can bring in your broken or unwanted precious metals to our Totnes workshop; we provide a fair market valuation which can be used as credit toward this brand-new 925 asset.
© 2026 H.E. Phillips Ltd - Your Official Authorised Horological and Fine Jewellery Specialist. All Technical Data verified for forensic accuracy.
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