PETROS | Polished Black Tungsten Twin Blue Groove Domed Wedding Ring — 8mm
The PETROS is a handcrafted tungsten carbide men's wedding band, 8mm wide, with a polished black tungsten domed body marked by two thin parallel deep-blue recessed grooves running the full circumference across the crown. Built comfort-fit, inside-laser-engravable, and backed by our lifetime warranty - twin cool-blue accent lines on deep mirror-polished black.
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 PETROS are PVD (physical vapor deposition) finishes bonded to the tungsten core at the molecular level - not paint or plating. Neither can peel, strip, or wear through. The metal is fully hypoallergenic and nickel-free. The dome is mirror-polished jet black; the twin grooves are recessed and finished in deep blue PVD.
Twin Deep Blue Grooves on Polished Black
The PETROS is built on contrast: a deep mirror-polished black tungsten dome cut by two thin parallel deep-blue lines. The grooves are precision-recessed into the surface and filled with deep-blue PVD, sitting slightly below the polished black surface - protected from contact, sharp under light.
From a distance the ring reads as a glossy dark band with two cool-blue accent lines. Up close, the parallel symmetry becomes the design - restrained, deliberate, geometric. It's a wedding band that gets its character from two precise lines rather than a wide inlay.
Who It's For
The PETROS is for the man who likes restraint with one bold accent - black-on-blue, monochrome with deliberate cool-tone detail. If you wear minimalist black with a single cool-color element, this band fits the aesthetic.
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
- Polished black tungsten domed body with twin deep-blue parallel grooves - twin cool-blue accent lines on deep mirror-polished black
- 8mm width with smooth domed 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)
Original: $169.00
-65%$169.00
$59.15Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The PETROS is a handcrafted tungsten carbide men's wedding band, 8mm wide, with a polished black tungsten domed body marked by two thin parallel deep-blue recessed grooves running the full circumference across the crown. Built comfort-fit, inside-laser-engravable, and backed by our lifetime warranty - twin cool-blue accent lines on deep mirror-polished black.
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 PETROS are PVD (physical vapor deposition) finishes bonded to the tungsten core at the molecular level - not paint or plating. Neither can peel, strip, or wear through. The metal is fully hypoallergenic and nickel-free. The dome is mirror-polished jet black; the twin grooves are recessed and finished in deep blue PVD.
Twin Deep Blue Grooves on Polished Black
The PETROS is built on contrast: a deep mirror-polished black tungsten dome cut by two thin parallel deep-blue lines. The grooves are precision-recessed into the surface and filled with deep-blue PVD, sitting slightly below the polished black surface - protected from contact, sharp under light.
From a distance the ring reads as a glossy dark band with two cool-blue accent lines. Up close, the parallel symmetry becomes the design - restrained, deliberate, geometric. It's a wedding band that gets its character from two precise lines rather than a wide inlay.
Who It's For
The PETROS is for the man who likes restraint with one bold accent - black-on-blue, monochrome with deliberate cool-tone detail. If you wear minimalist black with a single cool-color element, this band fits the aesthetic.
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
- Polished black tungsten domed body with twin deep-blue parallel grooves - twin cool-blue accent lines on deep mirror-polished black
- 8mm width with smooth domed 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)
