Italian 10K Yellow Gold Lobster Claw Clasp and Trace Chain
Jewelry (Chain Clasp and Necklace Component) · Unknown Italian manufacturer; the '417' mark in a lozenge indicates mass-production in a reputable Italian jewelry district (likely Vicenza or Arezzo).
Pattern: Standard Jewelry Findings - Lobster Claw Clasp; High-volume commercial export pattern.
Type
Jewelry (Chain Clasp and Necklace Component)
Maker
Unknown Italian manufacturer; the '417' mark in a lozenge indicates mass-production in a reputable Italian jewelry district (likely Vicenza or Arezzo).
Material
10-Karat Yellow Gold (41.7% pure gold, alloyed with silver, copper, and zinc). This is NOT a silver item; it is low-purity gold.
Dimensions
Standard small lobster clasp, approximately 8-10mm in length; total weight estimated under 1.0 gram based on scale relative to fingertips.
Description
A classic example of modern Italian gold-working, this piece consists of a 10K yellow gold lobster claw clasp and its corresponding end connector. While functional rather than decorative, the '417' stamp identifies its European export pedigree, as the US market typically uses karat '10K' while Europe uses decimal fineness.
Key Features
Dual-stamping (417 and 10K), yellow gold composition, mechanical trigger functionality, and Italian lozenge-style hallmark frame.
Material & Composition
10-Karat Yellow Gold (41.7% pure gold, alloyed with silver, copper, and zinc). This is NOT a silver item; it is low-purity gold.
Finish & Decoration
High-polish mirror finish; plain surface with no engraving or chasing; standard commercial gold luster.
Hallmarks & Stamps
Two primary stamps: '10K' on the lever of the lobster clasp and '417' inside a flattened lozenge/diamond cartouche on the end-cap connector. '417' is the European millesimal fineness for 10-karat gold.
Construction Details
Machine-die-struck components with a mechanical internal steel spring; mass-produced using modern industrial jewelry manufacturing techniques.
Functional Features
Spring-loaded trigger mechanism (lobster claw) designed for secure fastening; rotating end-cap to prevent chain tangling.
Handle & Grip Details
Trigger lever features a small thumb-grip protrusion for ease of opening; attached to chain via a soldered jump ring.
Craftsmanship Details
Industrial quality; crisp hallmark strikes; consistent solder flow on the jump ring; high-precision mechanical tolerances in the spring mechanism.
Authentication Indicators
The '417' hallmark is consistent with the '10K' stamp; the color is typical of 10K yellow gold which often has a slightly more brassy tone than higher karats; wear patterns show the metal is solid, not plated.
Origin & Manufacturing
Italy; manufactured in an industrial workshop using standardized European purity marking conventions.
Era & Period
Modern/Contemporary Jewelry (late 20th century to present); standard commercial design used globally.
Age Estimate
Circa 1990-present day; the specific font of the 417 hallmark suggests modern computer-aided die striking.
Cultural Significance
Represents the globalization of the jewelry trade where Italian manufacturing standards dominate the 'affordable luxury' gold market in North America.
Condition Notes
Very Good; light surface scratches and micro-abrasions consistent with wear against skin; mechanical spring appears intact and functional; no evidence of thinning or repair.
Value Estimate
$20 - $50 USD (Intrinsic metal value is low due to small weight and 41.7% purity; value is primarily functional).
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals like chlorine which can cause 'stress corrosion cracking' in lower-karat gold like 10K.
Similar Pieces
14K (585) Lobster Clasps, which would have a richer yellow hue, or Sterling Silver (.925) versions which would appear white/grey and lack the 417 stamp.
Interesting Facts
The number 417 represents the 41.7% gold content in 10-karat gold. In many European countries, 10K is the minimum fineness to be legally called 'gold,' while the UK often requires 9K (375).