Custom engagement rings, heirloom remounts, and one-of-a-kind pieces — designed with you, built by hand, in our studio. Not shipped to New York. Not outsourced. Made here.
Custom Engagement RingsHeirloom RemountingEstate Jewelry PurchasingWe Buy Diamonds & Gold3D Design & RenderingAll Work Done On-Premises50 Years · Newtown SquarePhiladelphia Main LineCustom Engagement RingsHeirloom RemountingEstate Jewelry PurchasingWe Buy Diamonds & Gold3D Design & RenderingAll Work Done On-Premises50 Years · Newtown SquarePhiladelphia Main Line
50
Years in Business
100%
On-Premises Craftsmanship
3D
Printed Models Before You Commit
0
Pieces Sent to New York
Our Work
Each piece begins with a conversation.
Every ring, pendant, and custom piece you see was designed in our studio, rendered in 3D, approved by the client, and handcrafted by our jewelers in Newtown Square. This is what it looks like when nothing gets outsourced.
What began as Eastern Lapidary in 1975 has grown into East Coast Jewelry Co — still family-owned, still in Newtown Square, still holding ourselves to the same uncompromising standard we started with.
Today we design everything in-house using professional CAD software, 3D print every model before casting, and finish every piece in our studio. Laser welding, laser engraving, casting, stone setting, polishing — it all happens at 5048 West Chester Pike.
Most of our clients come through a referral. That says everything about how we work.
Custom jewelry can feel overwhelming. Our process is the opposite — collaborative, transparent, and surprisingly enjoyable. You don't need to know exactly what you want. Nothing is cast until you love the design.
01
Consultation
Bring a photo, a sketch, a family heirloom, or just an idea. We'll shape it into something buildable — and beautiful. No obligation, no pressure.
02
Design & Render
We design your piece in 3D CAD and produce a photorealistic rendering so you see exactly what you're getting before anything is made. Revisions included.
03
Physical Model
We 3D print a wearable model of your design. Try it on. Hold it. Approve it in person. Nothing moves forward until you're certain.
04
Made Here
Cast and finished in our Newtown Square studio by our own jewelers. American craftsmanship, start to finish. Stamped ECJco inside every piece we make.
Stone Setting · On-Premises
Master Craftsmanship
3D Printing · In House
What We Do
Every service, under one roof.
From a one-of-a-kind engagement ring to resetting a stone that's been in your family for generations — everything is designed and executed on-premises by the same team you'll speak with start to finish.
Custom Engagement Rings
Design the ring she's never seen because it doesn't exist yet. We work with you to create something entirely personal — your story, your style, your stone. Every step in our studio.
Inherited a piece that doesn't fit your life? We redesign it into something you'll actually wear — honoring the stone and the story it carries while making it completely yours.
Pendants, earrings, bands, bracelets — if you can imagine it, we can build it. Every piece begins with a conversation and ends with something you won't find anywhere else.
Prong retipping, sizing, soldering, stone replacement — our master jeweler handles repairs of all complexity on-site. Same care, same team, same standard as our custom work.
Insurance appraisals performed by our qualified gemologist. Thorough, documented, and trusted across Delaware County, Chester County, and the Main Line.
Looking for a specific diamond or colored stone? We leverage industry relationships to source exceptional stones at competitive prices — natural and lab-grown.
Laser welder. Laser engraver. Large and small format 3D printers. State-of-the-art casting machines. Professional CAD workstations. Everything under one roof at 5048 West Chester Pike.
Estate & Purchasing
We buy what others overlook.
"Every piece has a story. We're interested in both."
Whether you've inherited jewelry you'll never wear, or you want to sell gold, diamonds, or estate pieces — we offer honest, fair evaluations with no obligation. We pay more because we know what we're looking at.
We purchase estate diamonds, colored stones, and fine jewelry outright — no consignment, no waiting, payment same day.
Precious metals in any condition: gold, platinum, silver — evaluated at current spot market rates, explained clearly.
Every evaluation is conducted by our experienced gemologist. You'll understand exactly what you have and why we're offering what we offer.
No pressure, no obligation. Just an honest conversation about what you have.
Located in Newtown Square at 5048 West Chester Pike, we're minutes from communities across Delaware County, Chester County, and the Main Line. Clients come to us from across the region — and stay for life.
Custom jewelry starts with a conversation. There's no obligation, no sales pressure — just a genuine discussion about what you have in mind, or what you'd like to sell. Walk-ins welcome, appointments preferred.
