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Does Astrid & Miyu tarnish? Is it waterproof?

Expect plating wear and tarnish with regular wear. Tarnish score 4/10. Main line: Sterling silver with 18k gold or rhodium plating.

Tarnish-resistance score · 4/10

Expect plating wear and tarnish with regular wear.

Sterling silver with 18k gold or rhodium plating.

Materials & claims

Materials: sterling silvergold platingrhodium plating
Coatings: gold platingrhodium plating
Waterproof claim: no
Hypoallergenic / nickel: unknown
Care claim: Plating can wear with water, sweat, perfume and friction
Source: https://help.astridandmiyu.com/en-GB/jewellery-discolouration-604967
Warranty: 2-year warranty for manufacturing defects; plating wear not covered unless a manufacturing fault
Covers tarnish: no
Source: https://help.astridandmiyu.com/en-GB/warranty-policy-604972
Price range: £42–£355 (median £120)
https://us.astridandmiyu.com/products.json (public catalog, pulled 2026-10-18) · 10th–90th percentile of listed products

Overall: Negative. A 2026 Trustpilot reviewer reported plating loss after six months and received only a small goodwill discount.

Trustpilot — Plating loss after six months
https://www.trustpilot.com/reviews/69987851dce22b7fb0764d5d

Material base: 5/10. Gold/rhodium-plated sterling silver: silver base tarnishes once plating wears, but it's restorable.

Wear-report adjustment: −1 (wear reports mostly negative).

Final: 4/10. Read the full rubric →

Last checked 2026-10-18.

Look for the base metal on each product page before you buy.