Materials glossary / Organic material
Leather
On the label: Leather · Organic material
What it is
Cord and wrap bracelets; 'genuine leather' is the lowest grade, full-grain the best.
Organic materials: Materials made by living things: pearls, amber, coral, shell, jet, bone. Softer than mineral stones and sensitive to acid, heat and perfume.
Wikidata: Durable and flexible material created by the tanning of animal rawhide and skin. Q286 →
In the research
232 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Generalized Allergic Contact Dermatitis Caused by Impurities Related to Disperse Yellow 3 in a Green Leather Sofa · Contact dermatitis, 2026
- Research on Epidemiology of Metal Sensitization in Japan · Dermatitis : contact, atopic, occupational, drug, 2026
- Nickel Persists, Chromium Declines: A 26-Year Perspective on Metal Sensitization and Clinical Relevance from Turkey · Dermatitis : contact, atopic, occupational, drug, 2026
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 USA
Other organic materials
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.