The Infinite

Tantalum • Black Diamonds

Tantalum wedding band with eternity set precious stones, free engraving, 10mm mens ring, faceted bevel profile, on white background
Tantalum wedding band with eternity set precious stones, 10mm mens ring with faceted bevel profile, free engraving, displayed on a white sea branch.
Mens 10mm tantalum wedding band with eternity set precious stones, faceted bevel profile, free engraving option.
Mens 10mm tantalum wedding band with eternity set precious stones, faceted bevel profile, free engraving option.
Tantalum wedding band with eternity set precious stones, mens 10mm faceted bevel profile ring, free engraving, displayed on a white sea branch.
Tantalum wedding band with eternity set precious stones, free engraving, 10mm mens ring, faceted bevel profile, on white background
Tantalum wedding band with eternity set precious stones, 10mm mens ring with faceted bevel profile, free engraving, displayed on a white sea branch.
Mens 10mm tantalum wedding band with eternity set precious stones, faceted bevel profile, free engraving option.
Tantalum wedding band with eternity set precious stones, mens 10mm faceted bevel profile ring, free engraving, displayed on a white sea branch.

The Infinite

Tantalum • Black Diamonds

$3,299.00
/
★★★★★ 1

Ring Sizer · 3-Pack

Perfect Fit Guaranteed

Our ring sizers are made to match your ring's width and comfort fit. Try three sizes at home, find the one that feels right, and we'll craft your ring to your confirmed size.

Our Guarantee: Follow our 3-Pack sizing process, and if your finished ring still doesn't fit comfortably, your first resize is FREE within 60 days of delivery.

FREE with your ring, and yours to keep.

  1. 1

    Not sure of your starting size? Start with our Printable Size Guide. Print the free PDF to estimate your size so we can send you three close sizes. The guide gets you close; our metal sizers help confirm your fit.

  2. 2

    We ship your sizers first. We make and ship your set within one business day, including your selected size, ¼ size down, and ¼ size up.

  3. 3

    Wear, then confirm. Experience the fit throughout the day. Wear your preferred sizer for at least 24 hours, then confirm using the QR code or email link.Need a size outside your 3-Pack? Request an additional matching sizer before confirming to keep your free-resize guarantee.

  4. 4

    We make your ring. Your crafting time starts once you confirm your size.

Useful Tips

  • Throughout the day: Fingers naturally change size. Try your sizer in the morning and evening.
  • The right feel: A good fit slides over your knuckle with gentle resistance, without spinning loosely.
  • Take your time: If you're not in a rush, wear your sizer for several days or up to a week. Try sleeping in it if that's how you'll wear your ring.

Want to try before ordering a ring?

You can customize and purchase our individual metal sizers.

Shop Individual Sizers
  • Lifetime Resize
  • Waterproof
  • Made in USA
Crafting Timeline
  1. 1 Ring sizer
    ships     Next dayCut off: 2PM ET
  2. 2 Confirm
    size
  3. 3 We craft
    your ring
  4. 4 Ships FREEStandard

Description

Discover the elegance of our custom wedding band, crafted from durable tantalum with a hammered finish and a beveled profile. At 10mm wide, this slim band features eternity-set black diamonds. Enjoy free engraving, a premium size kit, and full customization. Made to order with quality craftsmanship, it's waterproof and uniquely yours.

 

Our Guarantee

We stand behind every ring for life.

  • Resize or Replace any time your size changes*
  • Repairs covered if your ring is ever damaged
  • Returns accepted within 30 days (new, unworn only)

*Coverage applies every 6 months and includes resizing or replacement for rings up to $500. For higher value rings, just pay the difference. Engraved, custom, and memorial rings are not returnable. Shipping & handling applies.

Learn more

Craftsman's hands shaping a ring on a spinning workshop lathe, sending up a spray of dust
Craftsman's hands shaping a ring on a spinning workshop lathe, sending up a spray of dust

Crafted for you

From our hands to yours.

FAQ

How do I measure my ring size?

First, print out this guide and use it to measure your finger.

Next, order your ring and add the ring sizer 3-pack. You'll get three sizes: your chosen size, one 1/4 size up, and one 1/4 size down. Try them at home to find your perfect fit.

Ring sizers are made precisely to match the specifications of the ring you order.

How accurate are the ring sizers?

Our metal ring sizers are designed to mimic the real ring experience and include 1/4 options making them the most precise sizing option available.

Do I have to return the ring sizers pack?

Nope, these are yours to keep.

What if the ring does not fit?

No worries, you can send it back for a resize or exchange.

Some limitations and fees may apply. Learn more.

Can the design be customized?

Yes! We specialize in custom designs.
You can share your ideas and request a quote here.

Can I use my own materials?

Yes. We can use heirloom gold, ashes, sand, shells, or other sentimental items to create a unique ring.

Are the rings waterproof?

Yes. Our rings are coated with a waterproof resin, protecting materials like wood, antler, and minerals. You can wear them in water without worry.

Still have questions?

Chat with us
Three open black Sesto Synergy ring boxes, each holding a ring

Made for the moment

Ready to reveal.

Four Sesto Synergy wedding bands with inlays on a black background
View more

Reviews

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◎ Core
Tantalum
║ Inlay
Black Diamond
⟷ Width
10mm
⋒ Profile
Bevel
≣ Finish
Hammered
▃ Thickness
Slim
⊙ Fit
Comfort