Materials glossary / Plating and finish
Flash plating
On the label: Flash plating · Plating and finish
What it is
Plating under about 0.2 microns, enough for color and no more; the thinnest commercial layer, common on costume pieces.
Plating and finishs: A thin layer of one metal over another. The layer's thickness, written in microns, decides how long it lasts; US law sets minimums for what may be called gold-filled or vermeil.
In the research
No PubMed papers mention this material with jewelry, allergy or eyewear; that is usual for findings and trade terms.
Other plating and finishs
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.