Materials glossary / Glass, crystal and resin
Glass
On the label: Glass · Glass, crystal and resin
What it is
Soda-lime or lead glass cut or molded into beads and stones; Mohs 5.5, scratches, and the honest material of most costume jewelry.
Glass, crystal and resins: Glass, crystal and enamel: the honest, inexpensive end of jewelry, when called what it is.
Wikidata: Amorphous solid that exhibits a glass transition when heated towards the liquid state. Q11469 →
In the research
3,117 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Enhanced Third-Harmonic Generation in a Bound State in the Continuum Assisted Multiband All-Dielectric Metasurface · Nanophotonics (Berlin, Germany), 2026
- Ultra-miniaturized structured-light projector for tissue profiling in chip-on-tip endoscopy · Biophotonics discovery, 2026
- Photoluminescent-assisted hierarchical metafabric sunshade for high-efficiency passive cooling · Innovation (Cambridge (Mass.)), 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 glass, crystal and resins
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.