Chrysoberyl
On the label: Chrysoberyl · Gemstone
What it is
A hard (Mohs 8.5) yellow-green stone; cat's-eye chrysoberyl shows a sharp moving line.
Gemstones: Natural gemstones, as mined and cut. Hardness (Mohs scale) says what scratches what; treatment (heat, oil, dye) must be disclosed under FTC rules.
Wikidata: Oxide mineral. Q422179 →
In the research
1 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Preparation and Basic Properties of Praseodymium-Neodymium-Chromium Containing Imitation Gemstone Glass · Materials (Basel, Switzerland), 2022
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.
Other gemstones
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.