An eyepin is a jewellery finding consisting of a straight length of wire with a pre-formed closed loop — the "eye" — at one end. It is one of the most fundamental components in bead jewellery construction, serving as the structural unit from which bead links, drop earrings, and articulated chain sections are assembled. The term is sometimes rendered as loop pin, and it is closely related to the headpin, from which it differs in one essential respect: where a headpin terminates in a flat or decorative stopper, the eyepin terminates in a loop, allowing connection at both ends once the work is complete.

Construction and Function

In use, one or more beads are threaded onto the straight shaft of the eyepin. The protruding wire is then trimmed to a working length — typically 7 to 10 millimetres beyond the last bead — and bent into a second loop using round-nose pliers. The result is a self-contained bead link with a loop at each end, ready to be opened, attached to a chain segment, earring wire, clasp, or adjacent bead link, and closed again. This technique, sometimes called a wrapped loop when the wire is coiled around itself for additional security, is foundational to the construction of beaded chains, chandelier earrings, and multi-drop pendants.

Materials and Specifications

Eyepins are produced in a range of metals and alloys to suit different applications and price points:

• Base metals — brass, copper, and iron, typically finished with gold-tone, silver-tone, or antique plating. Suitable for fashion jewellery and prototyping.
• Sterling silver — the standard choice for fine bead jewellery, offering workability, durability, and compatibility with silver findings throughout a piece.
• Gold-filled — a mechanically bonded layer of karat gold over a brass core, offering the appearance and tarnish resistance of gold at a fraction of the cost of solid gold.
• Solid karat gold — used in fine jewellery where longevity and hallmarking are required.
• Niobium and titanium — employed where hypoallergenic properties are essential, particularly in earring applications.

Wire gauge is a critical specification. Eyepins for general bead work are commonly produced in 21 or 22 gauge (approximately 0.7–0.8 mm diameter), offering a balance between strength and the ability to pass through the drill holes of most beads. Heavier gauges (18–20) are used with larger or heavier stones, whilst finer gauges (24–26) suit small seed beads or delicate pearls. Standard lengths range from 25 mm to 75 mm, though custom lengths are available from findings suppliers.

Relationship to Other Findings

The eyepin sits within the broader family of wire findings alongside the headpin, jump ring, and bail. Its distinguishing characteristic — the pre-formed loop — makes it uniquely suited to creating linked chains of beads without the need for additional connecting rings at each junction. When a dangle rather than a link is required, a headpin is generally preferred; when a bead must be suspended from a fixed point with no lower connection, a bail or cage setting may be more appropriate. The choice between an eyepin and a wrapped-wire technique executed from raw wire is largely one of production efficiency: pre-formed eyepins accelerate assembly in both studio and production contexts.

In the Trade

Eyepins are sold by findings wholesalers in bulk quantities — typically in lots of 50, 100, or 1,000 — and represent a commodity component of jewellery manufacture. Quality assessment centres on the consistency of the pre-formed loop (which should be centred on the wire axis and fully closed), the temper of the wire (half-hard is standard, as it holds a formed loop without springing open), and the integrity of any plating. In fine jewellery production, eyepins are often fabricated in-house from wire stock to ensure precise gauge and alloy control.