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NEPTUNE | Silver Tungsten Ring Blue Sapphire Stone, Black & Blue Carbon Fiber Inlay, Beveled
NEPTUNE Tungsten Carbide Men's Ring
The NEPTUNE is a tungsten carbide men's wedding ring set with a real carbon fiber inlay in 8mm width. Custom engraved and shipped from our Irving, Texas shop. Free US shipping, free inside engraving, lifetime warranty, and lifetime sizing. Every NEPTUNE ships ready to wear.
Color: Blue & Black
Available Sizes: 5 – 14, including half sizes
Width: 8mm
Who the NEPTUNE is for
The NEPTUNE is for the gearhead, the engineer, and the buyer who wants something modern. The crosshatch weave is the same material in F1 cars and aerospace structures, miniaturized into a wedding band. Lightweight, tactical-looking, and pairs perfectly with brushed and polished finishes.
This elegant and sophisticated ring incorporates a Blue Sapphire and is made from one piece of polished Tungsten Carbide by cutting a channel almost all the way around the ring, where a blue and black carbon fiber is inlaid.
Free inside laser engraving available, does not delay your order.
- Backed by our lifetime warranty against manufacturing defects and lifetime sizing exchange.
- Available in 8mm width. Other widths are available as a custom order.
- Tungsten Carbide one of the hardest metals used in fine jewelry, exceptionally scratch-resistant.
- Comfort fit. Rounded interior glides over the knuckle for all-day comfort.
Key Features
- Material: Tungsten Carbide
- Inlay: Real Carbon Fiber (each ring's pattern is one-of-a-kind)
- Fit: Comfort Fit with rounded interior
- Width: 8mm
- Color: Blue & Black
- Engraving: Free inside laser engraving available
- Hypoallergenic: Nickel-free
- Warranty: Lifetime warranty against manufacturing defects
- Sizing: Lifetime sizing, swap the size any time
- Shipping: Free US shipping, ships in 1-2 business days
- Returns: 30 days from receipt on unworn rings
About Tungsten Carbide
Tungsten carbide is one of the hardest metals used in jewelry. It's much harder than titanium, gold, or platinum, holds a mirror polish that doesn't dull from daily wear, doesn't bend out of round, and resists scratching from almost anything you'll encounter day-to-day.
The trade-off is that tungsten is harder than it is tough. A direct hammer-strike or a fall onto concrete from height can chip it. In an emergency it can be cracked off the finger with standard ER tools, which is actually a safety advantage compared to gold or platinum.
Tungsten rings don't trigger nickel allergies, don't tarnish, and don't oxidize. The NEPTUNE holds the same finish years into wear as it has on day one.
About the Carbon Fiber Inlay
Carbon fiber is the same engineered material used in Formula 1 cars, aerospace components, and high-performance bicycles. The NEPTUNE's carbon fiber inlay is real woven carbon fiber, set in a clear matrix that locks the weave pattern into a permanent finish. The signature crosshatch pattern catches the light differently from every angle.
Carbon fiber is extremely lightweight, color-stable, and corrosion-proof. The black-on-black weave gives a tactical, modern look that pairs well with brushed and polished metals. It won't fade, won't dent, and won't shift in color over time.
Care: carbon fiber is essentially zero-maintenance. Wipe with a soft cloth and that's it. No chemicals, no oils, no special handling required. The inlay is sealed flush with the band edge, so daily wear is exactly what it's designed for.
What makes our NEPTUNE different
Custom engraved in our Irving, Texas shop. Aydins Jewelry has been selling rings since 2011, with over 10,000 orders shipped.
- Free US shipping on every NEPTUNE order
- Free inside laser engraving (date, initials, coordinates, phrase, whatever you want)
- Lifetime warranty against manufacturing defects
- Lifetime sizing: if it doesn't fit, send it back any time and we'll swap the size
- 30-day returns from receipt on unworn rings
Sizing & Fit
The NEPTUNE is comfort fit, meaning the inside of the band is rounded rather than flat, which makes it easier to slide over the knuckle and more comfortable for all-day wear. Comfort-fit rings typically size a half-size smaller than standard-fit rings, so if you normally wear a size 10 standard-fit, you'll likely wear a 9.5 in the NEPTUNE.
Available sizes: 5 – 14, including half sizes.
Not sure what size you wear? Use our free ring sizing guide, or order any size and use our lifetime sizing to swap if it doesn't fit perfectly the first time.
Care Instructions
Wipe the NEPTUNE with a soft cloth. That's the core care routine. Tungsten doesn't tarnish, doesn't oxidize, and doesn't lose its polish from daily wear. For a deeper clean, warm water and mild dish soap; rinse, dry, done. Avoid dropping on tile or concrete (tungsten is hard but brittle), and remove for heavy hammer/chisel work.
Engraving
Every NEPTUNE includes free inside laser engraving. Add a wedding date, initials, coordinates, or any phrase up to 30 characters. Engraving is permanent, professionally applied, and does not delay shipping.
Frequently Asked Questions
What color is the NEPTUNE?
The NEPTUNE features blue & black with a real carbon fiber inlay.
What sizes does the NEPTUNE come in?
The NEPTUNE is available in sizes 5 – 14, including half sizes. If you're between sizes, lifetime sizing is included, so you can order, try it, and swap if needed.
Is the NEPTUNE comfort fit?
Yes. The NEPTUNE is comfort fit, meaning the inside of the band is gently rounded so it slides over the knuckle easily and sits flat against the finger. Most wearers find it comfortable enough to forget they're wearing it.
Is the NEPTUNE durable for daily wear?
Tungsten carbide is one of the most scratch-resistant materials used in jewelry, and much harder than gold, titanium, or platinum. The NEPTUNE is highly resistant to scratches from daily wear. It is brittle under sharp impact, so avoid hammer-strikes or drops onto concrete.
Is the NEPTUNE hypoallergenic?
Yes. The NEPTUNE is nickel-free and hypoallergenic, safe for sensitive skin and people with metal allergies.
Can the NEPTUNE be engraved?
Yes. Free inside laser engraving is included with every NEPTUNE. You can add a date, initials, a phrase, or coordinates. Engraving doesn't delay shipping.
Is the carbon fiber inlay real?
Yes. The NEPTUNE uses real woven carbon fiber set in a clear matrix. The crosshatch weave you see is the actual material structure, not a printed pattern.
What if the ring doesn't fit?
Lifetime sizing is included with every NEPTUNE. If it doesn't fit, ship it back and we'll send a different size, even years after the original purchase.
How long does shipping take?
Free standard shipping ships within 1-2 business days from our Irving, Texas shop and arrives in 3-5 business days within the US. Most NEPTUNE orders arrive within a week of ordering.
What is Aydins' return policy?
See our returns and exchanges page for full details.
Can the NEPTUNE be cut off in an emergency?
Yes. Both tungsten and ceramic rings can be safely removed in an emergency. Hospitals use a tool that cracks the band cleanly off the finger without needing to cut through it. This is actually a safety advantage over gold or platinum, which require more time-consuming cutting.
Every ring you purchase from us includes a lifetime warranty and lifetime resizing. We make our jewelry with great care, using top-quality materials and skilled craftsmanship. We guarantee that our products are free from defects. If, by any chance, a piece of jewelry doesn't meet our high standards, we will replace it under our warranty. For more details, visit our 'Lifetime Warranty and Sizing' page.
USA, CANADA, AUSTRALIA, UK SHIPPING
- We offer FREE Shipping on every order placed on our site anywhere in the United States, Canada, Australia, and the UK.
- No Minimum is required for FREE Shipping to the US.
- A minimum of $90 USD is required for Free Shipping to Canada, Australia, and the UK.
- Next-day and Express delivery options are also available. (Processing Time Is Still Needed)
- Items ship within 1-5 business days.
- In-store collection is available within 1 to 5 business days.
INTERNATIONAL SHIPPING
- We ship worldwide to most countries around the world. If your country is not listed at checkout, please contact us, and we will be able to help.
- Delivery times may vary depending on the country.
- UPS/FedEx Express options are available for faster delivery.
RETURNS AND EXCHANGES
- Visit Returns & Exchanges for full details.