Materials glossary / Finding and chain
Jump ring
On the label: Jump ring · Finding and chain
What it is
The small wire ring that joins parts. Open (unsoldered) rings are the weak point on most chains; soldered rings do not pull open.
Finding and chains: The working parts: clasps, posts, backs, jump rings and settings. A piece is only as good as its findings.
Wikidata: Rings used to make chains, jewelry and chain mail. Q6311191 →
In the research
2 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Alterations in purinergic and cholinergic components of contractile responses of isolated detrusor contraction in a rat model of partial bladder outlet obstruction · BJU international, 2006
- In vivo cystometric evaluation of progressive bladder outlet obstruction in rats · The Journal of urology, 1997
A paper is a paper, not a verdict: titles are listed so you can read them, and a study on one fabric or one filter says little about the piece in your hand.
Pieces whose listing names it
2 on the siteMatched from the words in the supplier's listing; the full material line is on each product page.
Made in the USA
Made in the USA
Other finding and chains
Clasp & Lens describes materials from the public record and does not appraise, grade or test pieces; what a listing states is the supplier's statement. If a piece causes a rash, take it off; a reaction that spreads or blisters is a doctor's question, and sunglasses are no substitute for impact-rated eye protection where that is required.