Born on the Amalfi coast.
Costiera began with a simple frustration — real gold that couldn't touch water. We grew up on summers by the sea: golden-hour swims, salt air, lemon groves, long warm nights. So we built jewelry for the way the coast actually lives — pieces you never have to take off.
Made for real life, not a jewelry box.
Three things guide everything we make.
- Waterproof 18k gold — wear it in the shower, the gym and the sea
- One honest price — the same gold surface, without the luxury markup
- Designed to layer, mix and live in every day
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.
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.