Cushion Lab-Grown Diamond Engagement Ring | Canted Tab-Set Cushion on a Flat Band
Cushion Lab-Grown Diamond Engagement Ring | Canted Tab-Set Cushion on a Flat Band
Nyx Jewel Size Guide
| US | UK/AU | DIA (mm) | CIRC (mm) |
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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.
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Product Description
Product Description
Specifications
- Center stone: Cushion cut lab-grown diamond — chosen in the Ring Builder
- Accent stones: None — center stone only
- Stone orientation: Canted (set on the diagonal across a wide band)
- Setting: two flat tabs on opposite rounded corners, the elongated cushion lying at an angle on a wide flat band
- Metal: 10K, 14K & 18K solid gold and platinum
- Certification: IGI certificate on the center stone
- Ring sizes: US 3–10, including half sizes
- Made to order: 7-day production, then shipping
💎 Price shown after selecting your center stone.
Use our Ring Builder to choose your preferred diamond — carat, cut, and quality. Your final price is calculated once your center stone is selected.
A cushion is a square or rectangle with every corner and edge softened, which is why it is the most comfortable of these six to look at set on the diagonal - there is no sharp corner aimed at the edge of the band, just a rounded shoulder easing toward it. Elongated rather than square, the cut also carries the diagonal better, because it has a long axis to lie along.
The setting
The tabs take the two opposite rounded corners, where the curve gives them something to hug. A cushion's crown is domed and its facets are large, so it throws broad colored flashes rather than fine sparkle, and the mirror-polished band underneath feeds that - light comes up off the gold, into the pavilion and back out of the crown. The stone rests directly on the band's top face, which on a cushion is particularly noticeable: the deep pavilion is completely hidden, and all you see is crown.
About our lab-grown diamonds
Every stone we set is a lab-grown diamond — the same carbon crystal structure, hardness and optical behavior as a mined diamond, grown rather than extracted. Center stones of 1 carat and above ship with an IGI certificate stating carat, cut, color and clarity. Melee and pave stones are matched to the same color and clarity range but are not individually certified.
About the photographs
The photographs on this page show this setting made with one specific stone. The setting is exactly what you will receive; a different center stone changes the proportions — a heavier one spans more of the finger and sits a little higher. We photograph every finished ring and send you those images before it ships.
Common questions
Why an elongated cushion rather than a square one?
On the diagonal, a square cushion ends up looking like a diamond shape - a tilted square - and the effect is fussier. An elongated cushion keeps a clear long axis, so the eye reads a line rather than a rotated block. We can set a square cushion in this mount if you prefer; ask us first and we will show you both.
The pavilion is hidden. Does that affect brilliance?
It changes where the light comes from rather than how much there is. Light still enters and leaves through the crown, and the polished band under the stone reflects some of it back up. What you lose is the side view of the pavilion, which on a deep cushion is not usually the part people want to see.
Do the photographs show the exact ring I will receive?
The setting, yes — those are photographs of this setting made in our workshop. The diamond in them is one specific stone, so a different center stone will not look identical: a heavier one covers more of the finger and sits slightly higher. We photograph every finished ring and send you those images before it ships.
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
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 & 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
Arrange a private virtual consultation and experience our lab-grown diamond and moissanite collections wherever you are.
Daily: 7am–3pm ET Book a CallShare
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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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.