• The Quinn cushion engagement ring setting in 18K White Gold | RockHer
  • Classic Comfort Fit Rounded Solitaire Cut styling on The Quinn cushion engagement ring setting | RockHer
  • The Quinn engagement ring setting in 18K White Gold, classic comfort fit rounded solitaire cut design | RockHer
Try On

Quinn

The Quinn Classic Comfort Fit Rounded Solitaire Cushion Cut Engagement Ring Setting in 18K White Gold

SKU: EW80212HIVS-CU125RH

$2,605

Setting only · 18K White Gold.

Your center diamond, natural or lab-grown, is chosen next.Your center diamond is already chosen.

Tapered claws raise the diamond above a polished band, clean and modern.

Spare and sure, it lifts the diamond she chooses into the light on a band reduced to a single clear line. It is made for her alone, never for anyone else, never repeated, and set around the diamond she is meant to wear.

18K White Gold. Bright and cool, finished to a clean white that lets the diamond hold every eye.

Made by hand for her and her alone, to last the rest of your lives.
Made to Order · 8–12 business days
This ring doesn’t exist until you create it. Built entirely in our Los Angeles atelier and delivered insured to your door.
ROSI™ StyleMatch

Not sure this is the one?

Send a few photos of her and our AI finds the ring she would choose.

See her ring
Complimentary insured shipping
40-day returns
GIA / IGI certified
Lifetime warranty
View full details
  • Made Entirely to Order, Every Time
  • 40-Day Returns
  • Complimentary Insured U.S. Shipping
  • Lifetime Warranty
The Setting
Setting Style
Sub Style Classic, Solitaire
Metal Options 18K White Gold
Band Width
Diamonds & Origin
Diamond quality Matched to your center diamond
Finish High polish
Made In Los Angeles, USA
ROSI™ for This Ring

Every diamond paired with the Quinn Engagement Ring is ROSI™-scored before we recommend it.

ROSI™ is our gemologist-built intelligence that scores each diamond on light performance, structural integrity, and real-world beauty. Our gemologists recommend a ROSI™ score of 90 or higher for the Quinn. Every diamond you consider shows its score, so you see the trade-offs before you decide.

View Cushion diamonds scored 90+
Gemologist-recommended for the Quinn
ROSI™ Score 90+
From Our Clients

4.9 from 237 reviews on Trustpilot

Store-wide rating across all RockHer pieces. Read the reviews

Write a Review
From verified reviews
Verified purchase · Kelly Double Claw Prong French Pavé Marquise

“The most beautiful ring I’ve ever seen! I’ve fallen in love all over again!”

Brenda E. March 2026
Verified purchase · Lola Solitaire Setting

“Simply, you will not be disappointed with Rockher… it turned out better than I expected, and it is stunning. It wasn’t for her. It was for myself.”

Sarupinder S. January 2026
Verified purchase · 3ct tw Round Brilliant Lab Diamond Studs

“Completely wonderful experience with Rockher. They definitely deserve their A+ rating from the BBB. The earrings I bought are stunning and arrived over the 3.0 tcw that I ordered.”

Mark K. December 2025
The Quinn Select Solitaire Cushion Cut Lab Diamond Engagement Ring in 18K White Gold

The Select Edition

This exact ring, with the diamond already chosen

Searching thousands of certificates is work, and the fear of choosing the wrong diamond is real. The Select edition of this design lifts both off your shoulders. Our gemologists evaluated the certified lab diamonds suited to this setting and chose one worth standing behind, graded for cut, brilliance, and character, then verified through ROSI™, our gemological intelligence. One confident price, the diamond included, made to order in our Los Angeles atelier. One click and the deciding is done.

From $2,455 · diamond included

View The Select Edition

Rather talk it through first? John Anderson, our Lead Gemologist, is at (800) 779-1726.

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Common Questions

About the Quinn

No. The Quinn is a setting only. Choose your center diamond separately, our gemologists will guide you to the right stone for your budget. Every center stone is ROSI™ scored before we recommend it.
Every ring is made entirely to order in our Los Angeles atelier. Allow 8–12 business days from final approval to insured shipment.
Yes. Choose any of the four metal options (Platinum, 18K White, Yellow, or Rose Gold) above and the gallery will reflect that variant. Each metal can be paired with any center stone shape.
Eligible pieces may be returned within 40 days of the date of purchase in unworn, original condition. Engraved or personalized pieces are final sale once production begins. Review our Return and Exchange Policy for full terms, or speak with your gemologist, we will work with you to find the right design. A center diamond can be transferred to a new setting.
Yes. The Quinn Matching Wedding Band, Cushion in 18K White Gold was designed alongside this ring to sit flush against it. View the matching band, or ask your gemologist to show you the pairing.