14K Yellow Gold Vintage Tongue-and-Groove Clasp Insert
Clasp/Closure (Jewelry Component) · Yellow Gold. Typical alloy likely contains copper for strength and silver to maintain color.
Purity: 14K (58.5% Pure Gold). This alloy is standard for North American jewelry, balancing durability with gold content.
Type
Clasp/Closure (Jewelry Component)
Purity
14K (58.5% Pure Gold). This alloy is standard for North American jewelry, balancing durability with gold content.
Gold Type
Yellow Gold. Typical alloy likely contains copper for strength and silver to maintain color.
Weight
0.1 - 0.3 grams. This is a small, lightweight internal component of a larger bracelet or necklace.
Description
A replacement or detached 14K yellow gold 'tongue' insert for a box-style clasp. This ‘U’ shaped piece provides the spring-action tension necessary to secure high-end bracelets and necklaces by clicking into a hidden chamber.
Key Features
Double-prong tension design with a notched tip to catch the internal bar of a box clasp.
Color & Finish
Classic warm yellow gold with a high-polish finish that shows moderate wear and surface scratches from use.
Hallmarks & Stamps
Small recessed stamp on the left prong, likely reading '14K' or '585', though currently worn and blurry.
Dimensions Estimate
Approximately 5mm to 8mm in length; intended for a narrow-profile jewelry item.
Gemstones & Inlays
None. This is a functional structural component.
Clasp & Closure
Tongue (also known as a 'V-clasp' or 'box clasp' insert). It utilizes tension to lock into a matching box housing.
Chain & Links
N/A. Component is designed for attachment to a link bracelet or safety chain.
Craftsmanship Details
Likely cast and then die-struck for precision. The notch is precisely placed to ensure a 'click' sound upon engagement.
Authentication Indicators
Color consistency is indicative of solid 14K alloy; lack of base metal 'bleeding' at the wear points suggests it is not plated.
Origin & Maker
Generic manufacturing, possibly Italian or American origin, typical of high-volume jewelry findings makers.
Era & Period
Contemporary to Mid-Century (1960s-Present). This design has been the industry standard for box clasps for decades.
Age Estimate
Likely 10-30 years old based on the mechanical wear and the style of the notch casting.
Cultural Significance
Represents the evolution of 'invisible' jewelry findings designed to allow the aesthetics of a piece to continue uninterrupted by bulky fasteners.
Condition Notes
Fair to Good. Visible surface scratches and slight loss of tension. The edges show signs of frequent friction.
Value Estimate
Melt value is approximately $5-$15 USD depending on spot price. Retail replacement for the part is roughly $30-$50.
Care & Maintenance
Avoid over-bending the prongs as gold can work-harden and snap. Clean with mild soap and a soft brush to remove skin oils from the mechanism.
Similar Items
Lobster claw inserts, spring ring tabs, or 10K/18K variations of the same tongue design.
Interesting Facts
The tension in these clasps can be adjusted by gently pulling the prongs outward, a common jeweler's trick to fix 'loose' bracelets.