Book a Visit
Astra Jewelers
+1-973-289-9290
Home Engagement Rings Custom Jewelry Repairs
Jewelry Repair Watch Repair All Services
Watches Guides Visit Call Us +1-973-289-9290
Private Jewelry Studio | Montclair, New Jersey

Your
neighborhood
jeweler,
redefined.

Astra Jewelers is a private fine jewelry studio in Upper Montclair, NJ, offering natural diamonds, lab grown diamonds, custom design, engagement rings, gemstone sourcing, and jewelry repair through a more personal, appointment based experience. Whether you are creating something custom, comparing diamond options, or restoring a piece you love, Astra focuses on thoughtful service, craftsmanship, and attention to detail.

  • A private studio, by appointmentWalk-ins are welcome too, Monday through Saturday.
  • Natural and lab grown diamondsShown together in daylight, so you can compare.
  • Custom design and gemstone sourcingSee it in 3D, then wear a printed model first.
  • Gold, platinum and repair14k to 18k, white to rose, resizing and replating.
  • Engagement rings and wedding bandsWhere most first visits start.
Verified industry membership Proud member of Jewelers of America with JBT industry credentials.
Astra Jewelers on the Jewelers of America member directory JBT member badge

Request an Appointment

Share your details and we will contact you directly to confirm your visit.
Preferred way to reach you required
Natural Diamonds✦ Fine Jewelry✦ Lab-Grown Diamonds✦ Custom Design✦ Engagement Rings✦ Upper Montclair, NJ✦ Gemstone Sourcing✦ Jewelry Repair✦ Private Appointments✦ Fine Jewelry✦ Lab-Grown Diamonds✦ Custom Design✦ Engagement Rings✦ Upper Montclair, NJ✦ Gemstone Sourcing✦ Jewelry Repair✦ Private Appointments✦
Astra Jewelers founders Eddie and Stephanie Dieguez
A note from the founders

A husband and wife team

Astra Jewelers is the two of us, Eddie and Stephanie, a husband and wife team. When you visit, you talk to one of us directly. Never a rotation of sales staff, never a stranger picking up where someone else left off. We keep the studio private and appointment based because choosing jewelry is personal. Personal things deserve quiet.

Every piece in our cases was picked by one of us. And when we make something custom, it is drawn around you, your hand, your stone, your story, so the finished piece could never have belonged to anyone else.

Eddie & Stephanie Dieguez Founders, Astra Jewelers

See the work moving

Short clips of recent pieces and visits from the studio.

Radiant, cushion and elongated cushion diamonds held together
A 7.4 carat princess cut center stone
A client favorite ring from this season
A piece moving from loose stone to finished ring in the studio
A pear cut ruby ring with diamond accents, worn on the hand
A Briston Clubmaster chronograph on a red, white and blue strap
A painting on display at the Astra Jewelers studio
Google Reviews

What Clients Say

G
Astra Jewelers View on Google

Google Reviews

Real customer feedback, see what people say about Astra Jewelers.

Wonderful people, great customer service, and an excellent turnaround time! They did a great job fixing my chain, and I really appreciate the quality of the work. Highly recommend!
T C
Stephanie and Eddie were absolutely amazing! They were incredibly helpful, honest, communicative, and informative throughout the entire process. They were able to resize my fiancée’s engagement ring, and the turnaround time was impressively quick. The customer service and overall experience were excellent, and I already know that when it’s time to purchase my ring, It will be from Astra Jewelers! Thank you both again for making this such a great experience. I highly recommend Astra Jewelers!
Shanee Mitchell
Fantastic experience. Great work from a family-owned and entrepreneurial business, and exceedingly nice people. This is THE place to go, also supporting local Montclair business people!
Jonathan Roth
Amazing customer service! Highly recommended. Was able to remove our original stone and replace with a new one. They were able to source the new stone for us. And didnt stop until we found the right one. 100% amazing service. From start to finish. Communication was professional and confirmed with us, for every step of the process of what we needed to get done exactly. Affordable and willing to work with you best on budget. A+++ Now my engagement ring is exactly perfect 😍 Thank you Astra Jewelers for making my dream come to a reality.
meliphurts69
Very nice. Stayed in contact with me while my item was being repaired. I felt very comfortable leaving my jewelry in their care. They gave me a quality repair.
Richie
Eddie has a great knowledge and insights. He found the perfect choice for my gift and I definitely will be back
G G
I had my watch serviced by Astra Jewelers and was extremely pleased. Work was excellent and the owners Eddie and Stephanie could not possibly by nicer and more accommodating. I highly recommend them.
Richard Ontell
Excellent professional service - very nice people and extremely knowledgeable about their craft. Highly recommend!
Leonard Catanzaro

Read all our reviews on Google, rated 5.0

Upper Montclair Studio

Find Astra

We are based in Upper Montclair and serve clients across Essex County and surrounding New Jersey areas through private appointments and in-store visits.

Address 250 Bellevue Ave, 2nd Floor, Montclair, NJ 07043
Hours Mon-Fri: 10:00am-6:00pm, Sat: 10:00am-5:00pm