Lab-Grown Diamond Engagement Rings in Brooklyn
Not a sales floor.
A conversation.
Custom engagement rings designed one at a time in our Williamsburg studio.
Visit the Studio
"The microscope was the first honest tool I owned."
Sue Kim, Founder · GIA Trained · 6 years on 47th Street
I spent six years in the Diamond District learning how the industry works. Then I left to build something different. At Haejin, every stone goes under a microscope before it goes into a setting. Every price is transparent. Every consultation is a conversation, not a pitch.
Real Moments
37 Reviews. 5.0 Stars. Zero Negative. Ever.
"Personal care from an expert jeweler. I got a great deal for the size and quality of diamond. Honestly couldn't be happier."
Shea
Proposed 40 feet underwater · Google Review
"I also did not expect to be given a ring. It is amazing."
Daye & Yorick
Designed matching toi et moi rings, both proposed
"She helped me create the ring of my dreams. I was blown away. Truly exactly what I wanted."
Lauren C.
Custom emerald bezel design · Yelp
Start Exploring
Three Ways to Begin
Ring Builder
Choose a setting, select your diamond, preview instantly. 400,000+ combinations.
Start Building →Band Atelier
Design a custom wedding band. 9 dimensions, real-time pricing, made to order.
Design a Band →Custom Design
Something only you will ever wear. Start with a sketch, a photo, or just an idea.
Start a Conversation →
He presides over promises for a living.
Barry is a Brooklyn judge. When it came time to make a promise of his own, he walked into our Williamsburg studio. His fiancee knew exactly what she wanted. An emerald cut diamond she had been imagining for years. Over many visits, we refined every detail together until the ring in her mind became the ring on her hand.
The photo booth strip beside it is their story.
As Featured In
The space itself reflects why women choose to shop here instead of Manhattan: it is calm and simple. There is time to ask questions.
Brownstoner, March 2026
This is what shopping for a ring should feel like. Not a sales floor, but a conversation.
Lauren Ladouceur, Plan with Laur
Questions
Frequently Asked
Are your diamonds certified?
Every lab-grown diamond at Haejin is IGI-certified with a full grading report. Sue personally inspects each stone under a Nikon SMZ microscope before setting.
Do you use real gold?
Always. SCS-certified 100% recycled solid gold. Never hollow, never gold-filled, never plated. Available in 14K and 18K yellow, white, and rose gold, plus platinum.
Do I need an appointment?
Appointments are preferred so Sue can give you her full attention, but walk-ins are welcome during studio hours. Consultations are always free, always no-pressure.
What makes Haejin different from other NYC jewelers?
One jeweler. One studio. No commissioned salespeople. Sue works with you directly from first conversation through final setting. Every ring is made to order.
What is your return policy?
60-day free returns on all pieces. Lifetime warranty on craftsmanship. 70% lifetime diamond trade-in, no expiration.
Come See for Yourself
123 Skillman Avenue
Williamsburg, Brooklyn, NY 11211
Hours
Tue–Fri 11am–5pm · Sat 11–6 · Sun 11–4
Closed Mon & Wed
Phone