XO Flat Curb Cuban™ 4mm | Solid 925 Silver | Diamond-Cut Chain (5-Layer Shield)

The XO Flat Curb Cuban™ is an effortless, low-profile essential built for precision shine, smooth comfort, and everyday luxury wear.

Crafted from solid .925 sterling silver and finished with diamond-cut facets, this 4mm flat curb delivers a sleek, mirror-like flash without needing stones to catch the light. Sealed with our proprietary XO 5-Layer Shield Protection™, it’s engineered as a true "live-in" piece—built to hold its brilliant finish through daily sweat, water, and real-world wear without tarnishing or dulling down.

Whether worn solo for a clean, understated flex or stacked alongside our 3.5mm Rope Chain, the Flat Curb Cuban delivers high-end weight, sharp engineering, and quiet luxury presence.

Details & Engineering

4mm Diamond-Cut Profile: Sleek, flat-laying link design crafted with razor-sharp facets for maximum direct light reflection and comfort.

Solid .925 Sterling Silver: Pure silver base that provides ideal weight and durability for everyday wear.

XO 5-Layer Shield Protection™: Multi-stage barrier engineered to completely seal out moisture, tarnish, and daily friction:

Solid .925 Sterling Silver Base

Thick Pure Silver Plating

Palladium Barrier Layer (blocks corrosion and locks out tarnish)

Brilliant Rhodium Finish (provides deep, mirror-like luster)

Baked Nano E-Coating (hydrophobic topcoat that repels water, sweat, and oils)

Precision Lobster Clasp: Snappy, high-tension closure tested for daily security and long-term durability.

Zero-Maintenance Wearability: Smooth, solid-metal construction that wipes clean in seconds with a soft microfiber cloth.

XO Jewelry — Engineered quality. Pure silver. Unmatched shine.