Moonstone
On the label: Moonstone · Gemstone
What it is
Feldspar that shows a floating blue or white sheen (adularescence). Mohs 6 to 6.5, cleaves; rainbow moonstone is a labradorite.
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: Orthoclase variety moonstone also known as white labradorite from feldspar with schiller. Q430034 →
In the research
1 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Trace elemental analysis of Indian natural moonstone gems by PIXE and XRD techniques · Applied radiation and isotopes : including data, instrumentation and methods for, 2013
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
2 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
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.