Jade
On the label: Jade · Gemstone
What it is
Two minerals: jadeite (the rarer, Burmese) and nephrite (the tougher, Chinese and New Zealand). Mohs 6 to 7 and the toughest gem material. Type A is untreated; B is bleached and resin-filled; C is dyed. Much 'jade' sold cheaply is serpentine or glass.
Gemstones: Natural gemstones, as mined and cut. Hardness (Mohs scale) says what scratches what; treatment (heat, oil, dye) must be disclosed under FTC rules.
In the research
72 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Does Baseline Severity of Atopic Dermatitis Impact the Long-Term Efficacy of Abrocitinib? Post-hoc Analysis of Two Randomized Trials · Dermatology and therapy, 2026
- Long-term efficacy of abrocitinib for atopic dermatitis: 96-week results of the JADE EXTEND study comparing patients receiving monotherapy with those receiving combination therapy · Journal of the American Academy of Dermatology, 2026
- Efficacy of abrocitinib and dupilumab on chronic hand eczema in patients with moderate-to-severe atopic dermatitis: A prespecified exploratory analysis of the phase 3 JADE DARE stu · Journal of the American Academy of Dermatology, 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.
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.