Brass
On the label: Brass · Metal
What it is
An alloy of copper and zinc, yellow and often used as the base for plated jewelry. Tarnishes and can green the skin when the plating wears; a common source of nickel in cheap findings.
Metals: Solid metals: what the piece is made of all the way through. Purity is written as karat (gold) or parts per thousand (925 silver, 950 platinum).
Wikidata: Alloy of copper and zinc. Q39782 →
In the research
41 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Brass Instrument-Related Dermatitis and Cheilitis: A Cross-Sectional Survey Study of Brass Musicians · Dermatitis : contact, atopic, occupational, drug, 2026
- Quantitative Broadband Optical Spectroscopy of Freestanding Ti(3)C(2)T(x) MXene Films: Unveiling Intrinsic Bulk Charge Carrier Dynamics · ACS applied materials & interfaces, 2025
- Proton Therapy for Uveal Melanoma on a Pencil Beam Scanning Gantry · Advances in radiation oncology, 2025
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
24 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
Made in the USA
Made in the USA
Made in the USA
Made in the USA
Made in the USA
Made in the USAOther metals
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.