The PROTO is a handcrafted two-tone tungsten carbide men's wedding band, 8mm wide, with a polished black tungsten body, a rose-gold-tone Celtic knotwork cut-out design inlay running across the center, and polished rose-gold-tone beveled edges. Built comfort-fit, inside-laser-engravable, and backed by our lifetime warranty - a warm copper-toned cousin to the silver BETTLER, with the same heritage knotwork pattern in a different palette.

The Metal

Tungsten carbide is the hardest wedding-band metal made - roughly 4× harder than titanium and 10× harder than 18k gold. That's not marketing language; it's a measurable Mohs hardness of 8.5-9. In practical terms: this band will not scratch from keys, tools, gym equipment, or daily contact with desks, steering wheels, or phone cases. It will look the same in five years as it looks the day you open the box.

Both tones on the PROTO are PVD (physical vapor deposition) finishes bonded to the tungsten core at the molecular level - the black and the rose-gold-tone are molecularly integrated, not painted or plated. Neither can peel, strip, or wear through. The metal is fully hypoallergenic and nickel-free. The beveled profile chamfers the outer edges. The Celtic knotwork inlay is a rose-gold-tone layer with precision cut-outs that let the black tungsten body show through each opening.

The Rose Gold Celtic Knotwork Cut-Out Design

The PROTO takes the Celtic knotwork tradition into a warmer palette. The body stays polished black tungsten - grounded, masculine, neutral. The knotwork inlay is rose-gold-tone with precision cut-outs, so the interlacing ribbons read as warm copper-gold against a dark field, with the black tungsten peeking through every opening in the pattern. Polished rose-gold-tone beveled edges frame the composition.

Where the BETTLER reads cool and traditional (silver Celtic, Scottish highland palette), the PROTO reads warm and romantic (rose-gold Celtic, Irish autumn palette). Same heritage pattern, different emotional register. From a distance the ring reads as a dark band with a warm copper pattern at the center; up close, the cut-outs and knotwork curves become readable as a real two-layer inlay.

Who It's For

The PROTO is for the man who wants Celtic heritage or symbolism in his wedding band with a warmer romantic palette - rose-copper gold rather than cool silver. If your style pulls toward warm leathers, brass, and amber tones, or if you simply prefer rose-gold over silver as your accent metal, this is the Celtic band that matches.

Key Features

• Tungsten carbide construction - 4× harder than titanium, 10× harder than 18k gold, scratch-resistant for daily wear
• Hypoallergenic - nickel-free, safe for sensitive skin
• Rose-gold-tone Celtic knotwork cut-out design inlay on polished black tungsten body with polished rose-gold-tone beveled edges - heritage knotwork in a warm copper-gold palette
• 8mm width with smooth beveled profile
• Comfort-fit interior - rounded inside for all-day wear
• Free inside laser engraving - up to 30 characters, any font
• Lifetime warranty + replacement sizing program - defect coverage and a replacement ring if your finger size changes (see warranty page)
• Ring sizes 7 - 15 (including half sizes)