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Cyan Blue Round Lab-Grown Diamond Engagement Ring | Rope-Twist Band

Cyan Blue Round Lab-Grown Diamond Engagement Ring | Rope-Twist Band

Regular price $2,791.00 USD
Regular price Sale price $2,791.00 USD
Sale Sold out

Nyx Jewel Size Guide

Your Measurement (Length)
54.5 mm
Matches US Size: 7
US UK/AU DIA (mm) CIRC (mm)

How to Measure

Wrap a piece of paper or string around your finger. Mark where it overlaps, then measure that length with a ruler in millimeters. Slide to match your measurement above.

● Make It Yours - Order today, and we ship by Sunday, 22 Nov

Everything you need, worry-free.

Free Shipping & Returns Free Shipping & Returns
Free Lifetime Warranty Free Lifetime Warranty
Free Complimentary Hidden Birthstone Free Complimentary Hidden Birthstone
Free Ring Sizing Free Ring Sizing

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Product Description

Specifications

  • Piece: Sold with the center stone below — this cut is not offered in the diamond selector
  • Center stone: 3.00ct round lab-grown cyan blue diamond, VVS clarity
  • Accent stones: None — center stone only
  • Stone orientation: Face-up round
  • Setting: six round-tipped claws on a tall cathedral head that sweeps down into a two-strand twisted rope band
  • Metal: 10K, 14K & 18K solid gold and platinum
  • Certification: IGI certificate on center stones of 1 carat and above
  • Ring sizes: US 3–10, including half sizes
  • Made to order: 1–2 week production, then shipping

The contrast is the point: a 3 ct round lab-grown cyan blue diamond, large and saturated, on a band that is just two fine strands twisted together. White metal keeps the blue-green of the stone cool rather than warming it.

The setting

Six round-tipped claws hold the stone, one pair more than a four-claw head, which keeps a round this size secure and makes its outline look rounder. The head is tall and cathedral-style, with the claws sweeping down into the shank, and the gallery beneath is open so light enters from the sides. The shank is a two-strand rope twist of about 1.8–2.0 mm. The trade-off of a tall head is that it catches sleeves and gloves more easily than a low basket would.

About our lab-grown diamonds

The center stone is a lab-grown colored diamond — the same carbon crystal, hardness and optical behavior as a mined diamond, grown rather than extracted, with its color from trace elements or post-growth treatment as stated on its certificate. Accent stones are colorless lab-grown diamonds matched to one another for color and clarity.

Common questions

Why is a cyan round not available in the diamond selector?
The Ring Builder carries white centers. Colored lab-grown diamonds like this cyan blue are sourced individually to match a setting, so this ring is offered with its 3 ct stone already chosen for the tall six-claw head.

Can the rope-twist band be resized?
Yes, usually within a size or so. The jeweler has to match the twist where the band is cut and joined, so larger changes can mean replacing a section of the rope. Tell us your size when ordering and we make it to size rather than resizing afterward.

Do the photographs show the exact ring I will receive?
The design, the cut and the carat weight, yes. Individual stones vary slightly, and colored stones in particular read differently under daylight and warm indoor light. We photograph your finished ring and send you those images before it ships.

Where does the color come from?
Lab-grown colored diamonds take their color either from trace elements during growth or from a treatment after growth, and the certificate states which. Either way the color is stable in normal wear and cleaning; avoid holding the ring in a jeweler's torch flame during any repair, which is the one thing that can alter treated color.

Is the center stone certified?
Yes. Every center stone of 1 carat and above ships with an IGI certificate stating carat, cut, color and clarity. Accent and pave stones are matched to the same color and clarity range but are not individually certified.

Materials & Care

Material

Our pieces are thoughtfully crafted in
100% certified recycled gold, paired with ethically sourced lab-grown diamonds and moissanite. Designed with precision, each creation reflects timeless beauty and modern craftsmanship.

Care

To preserve its brilliance, remove your jewelry before exposure to chemicals, water, or heavy activities. Store it safely and clean occasionally with a soft cloth for a lasting shine.

Shipping & Returns

Shipping

Enjoy complimentary shipping on every order. Each piece is thoughtfully packaged to protect its beauty in transit. Standard delivery takes 5–9 business days, with faster shipping options available.

Returns & Exchanges

We want you to love your piece. If not, returns and exchanges are accepted within 30 days of delivery. Simply ensure items are unworn and in original packaging to begin the process.

Virtual Appointment

Virtual Appointment

Arrange a private virtual consultation and experience our lab-grown diamond and moissanite collections wherever you are.

Daily: 7am–3pm ET Book a Call
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UNBOXING EXPERIENCE

Everything inside the box.

Your Ring

Handcrafted to order

IGI Certificate

Diamond grading report

Luxury Box

Proposal-ready

Hidden Birthstone

Set inside the band

Warranty Card

Lifetime coverage

Polishing Cloth

Keep her sparkling

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Ask Us Anything

Doubts? Good.

The right ring deserves them.

Yes. 100%. They're chemically, optically, and physically identical to mined diamonds — same hardness, same fire, same sparkle. Even a jeweler can't tell them apart without specialized equipment. The only difference is origin: ours grew in a few weeks instead of a few billion years.

Ready-to-ship pieces arrive in 3–5 business days with free insured shipping. Custom rings and bridal sets take 2–3 weeks — because each is handcrafted to order. We'll keep you posted at every stage, including a final photo before it ships.

No-questions-asked 30-day returns on every non-customized piece. If it's not perfect, send it back — full refund, no awkward calls. For custom and engraved pieces, we offer store credit so you can choose again.

Complimentary resizing within the first month— including a return-shipping label. Our lifetime warranty also covers ongoing maintenance, polishing, and minor repairs at no cost. The ring is yours forever; so is our service.