Waterproof 18k gold
Gold that lives in the sea.
Jewelry made for the Amalfi coast — shower, swim, sun. It won’t tarnish.
1-year shine guarantee
Free shipping
The honest price
Real gold, without the real-gold price.
Solid 18k gold chain
$1,800+
Costiera 18k PVD gold
$89
The same 18k gold surface, pressure-bonded with PVD so it's waterproof and never tarnishes. One honest price — no markup for a name.
Why it never tarnishes
Gold that's bonded, not brushed on.
PVD (physical vapor deposition) fuses a layer of real 18k gold to surgical-grade steel under high heat and pressure. The bond is molecular — it can't flake or wash off like plating. That's why Costiera survives the sea, the shower, and years of daily wear.
- Real 18k gold surface — not plating
- Pressure-bonded with PVD, so it can't flake
- Waterproof, hypoallergenic, tarnish-proof
Wear them together
La Costiera Stack
Three pieces, layered like light on the water — a chain, a pendant, and a pearl drop. Worn together or apart. Always waterproof.
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Riviera Herringbone Necklace
$84.00
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Ravello Sun Pendant
$72.00
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Minori Pearl Drops
$56.00
The set
$212.00
Il nostro mare
Born on the Amalfi coast.
Costiera began with a simple frustration: real gold that couldn't touch water. So we built jewelry for the way the coast actually lives — golden-hour swims, salt air, lemon groves, long warm nights. Gold you never have to take off.
La Promessa
If it ever loses its shine, we replace it.
Every piece is backed by our 1-year shine guarantee. Wear it in the sea, the shower, and the sun — if the gold ever dulls within a year, we'll send you a new one. That's how sure we are of the bond.